Enable spotless on all modules

[cartland]

The ./gradlew spotlessApply command was failing in the :watchfacepush:validator and :identity:credentialmanager modules due to incorrect path calculations during the format and apply steps. This was caused by ambiguous source directory configurations in their build.gradle.kts files, which led to errors like NoSuchFileException and FileAlreadyExistsException.

This commit resolves these issues by explicitly defining the sourceSets in the build scripts for the affected modules. This removes the ambiguity and ensures that Gradle and the Spotless plugin can reliably locate the source files.

As a result of this fix, the apply_spotless.yml GitHub workflow has been simplified to run a single, project-wide spotlessApply command.

The .gitignore has also been updated to correctly ignore all build directories.

[snippet-bot]

Here is the summary of changes.

You are about to add 23 region tags.

• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:51, tag android_identity_initialize_credman
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:72, tag android_identity_get_password_passkey_options
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:83, tag android_identity_get_credential_request
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:90, tag android_identity_prepare_get_credential
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:103, tag android_identity_launch_sign_in_flow_1
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:119, tag android_identity_handle_exceptions_no_credential
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:137, tag android_identity_autofill_construct_request
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:152, tag android_identity_autofill_get_credential_api
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:170, tag android_identity_autofill_enable_edit_text
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:185, tag android_identity_launch_sign_in_flow_2
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:231, tag android_identity_create_passkey
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:262, tag android_identity_handle_create_passkey_failure
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:296, tag android_identity_register_password
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyWebListener.kt:237, tag android_identity_javascript_reply_channel
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/SignInWithGoogleFunctions.kt:44, tag android_identity_siwg_instantiate_request
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/SignInWithGoogleFunctions.kt:60, tag android_identity_siwg_signin_flow_create_request
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/SignInWithGoogleFunctions.kt:79, tag android_identity_siwg_signin_flow_handle_signin
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/SignInWithGoogleFunctions.kt:132, tag android_identity_siwg_get_siwg_option
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/SignInWithGoogleFunctions.kt:142, tag android_identity_handle_siwg_option
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/SignInWithGoogleFunctions.kt:173, tag android_identity_siwg_instantiate_request_2
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/WebViewMainActivity.kt:35, tag android_identity_initialize_the_webview
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/WebViewMainActivity.kt:78, tag android_identity_create_webview_object
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/WebViewMainActivity.kt:91, tag android_identity_set_web

You are about to delete 23 region tags.

• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:52, tag android_identity_initialize_credman
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:73, tag android_identity_get_password_passkey_options
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:84, tag android_identity_get_credential_request
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:91, tag android_identity_prepare_get_credential
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:104, tag android_identity_launch_sign_in_flow_1
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:120, tag android_identity_handle_exceptions_no_credential
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:138, tag android_identity_autofill_construct_request
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:153, tag android_identity_autofill_get_credential_api
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:171, tag android_identity_autofill_enable_edit_text
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:182, tag android_identity_launch_sign_in_flow_2
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:228, tag android_identity_create_passkey
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:259, tag android_identity_handle_create_passkey_failure
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyAndPasswordFunctions.kt:293, tag android_identity_register_password
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/PasskeyWebListener.kt:218, tag android_identity_javascript_reply_channel
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/SignInWithGoogleFunctions.kt:45, tag android_identity_siwg_instantiate_request
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/SignInWithGoogleFunctions.kt:61, tag android_identity_siwg_signin_flow_create_request
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/SignInWithGoogleFunctions.kt:80, tag android_identity_siwg_signin_flow_handle_signin
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/SignInWithGoogleFunctions.kt:133, tag android_identity_siwg_get_siwg_option
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/SignInWithGoogleFunctions.kt:143, tag android_identity_handle_siwg_option
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/SignInWithGoogleFunctions.kt:175, tag android_identity_siwg_instantiate_request_2
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/WebViewMainActivity.kt:19, tag android_identity_initialize_the_webview
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/WebViewMainActivity.kt:61, tag android_identity_create_webview_object
• identity/credentialmanager/src/main/java/com/example/identity/credentialmanager/WebViewMainActivity.kt:74, tag android_identity_set_web

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