feat(desktop): Add macOS signing and notarization

- Configure macOS signing using `bundleID`, `sign`, `identity`, and `keychain` properties.
- Add notarization settings, sourcing `appleID`, `password`, and `teamID` from environment variables.

Author: softartdev

app/desktop/build.gradle.kts

@@ -52,7 +52,21 @@ compose.desktop {
             packageVersion = "8.4.6"
             description = "Note app with encryption"
             copyright = "© 2023 SoftArtDev"
-            macOS.iconFile.set(project.file("src/jvmMain/resources/app_icon.icns"))
+            macOS {
+                bundleID = "com.softartdev.notedelight.desktop"
+                signing {
+                    sign.set(true)
+                    identity.set("Artur Babichev")
+                    keychain.set("${System.getProperty("user.home")}/Library/Keychains/app-signing-db")
+                }
+                notarization {
+                    val providers = project.providers
+                    appleID.set(providers.environmentVariable("NOTARIZATION_APPLE_ID"))
+                    password.set(providers.environmentVariable("NOTARIZATION_PASSWORD"))
+                    teamID.set(providers.environmentVariable("NOTARIZATION_TEAM_ID"))
+                }
+                iconFile.set(project.file("src/jvmMain/resources/app_icon.icns"))
+            }
             windows.iconFile.set(project.file("src/jvmMain/resources/app_icon.ico"))
             linux.iconFile.set(project.file("src/jvmMain/resources/app_icon.png"))
             modules("java.sql")