Enable spotless on all modules

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.

Author: cartland

.github/workflows/apply_spotless.yml

@@ -42,16 +42,7 @@ jobs:
         java-version: '17'
 
     - name: Run spotlessApply
-      run: ./gradlew :compose:spotlessApply --init-script gradle/init.gradle.kts --no-configuration-cache --stacktrace
-
-    - name: Run spotlessApply for Wear
-      run: ./gradlew :wear:spotlessApply --init-script gradle/init.gradle.kts --no-configuration-cache --stacktrace
-
-    - name: Run spotlessApply for Misc
-      run: ./gradlew :misc:spotlessApply --init-script gradle/init.gradle.kts --no-configuration-cache --stacktrace
-
-    - name: Run spotlessApply for XR
-      run: ./gradlew :xr:spotlessApply --init-script gradle/init.gradle.kts --no-configuration-cache --stacktrace
+      run: ./gradlew spotlessApply --init-script gradle/init.gradle.kts --no-configuration-cache --stacktrace
 
     - name: Auto-commit if spotlessApply has changes
       uses: stefanzweifel/git-auto-commit-action@v5

.gitignore

@@ -6,7 +6,7 @@
 /.idea/modules.xml
 /.idea/workspace.xml
 .DS_Store
-/build
+build
 /captures
 .externalNativeBuild
 .idea/*

identity/credentialmanager/build.gradle.kts

@@ -39,6 +39,13 @@ android {
     buildFeatures {
         compose = true
     }
+    sourceSets {
+        named("main") {
+            java {
+                srcDir("src/main/java")
+            }
+        }
+    }
 }
 
 dependencies {

watchfacepush/validator/build.gradle.kts

@@ -26,6 +26,14 @@ application {
     mainClass.set("com.example.validator.Main")
 }
 
+sourceSets {
+    named("main") {
+        java {
+            srcDir("src/main/java")
+        }
+    }
+}
+
 dependencies {
     implementation(libs.validator.push)
 }