Refactor color definitions

[mikepenz]

• rework color definitions to provide more flexibility
  • FIX LibraryColors.backgroundColor has no effect in M3 library #1206
• update *.api
• refine MIGRATION guides

[Copilot]

Pull Request Overview

This PR refactors the color definitions to introduce more descriptive properties and enhances plugin structure by splitting Android-specific task registration into its own plugin.

• Renamed backgroundColor/contentColor to libraryBackgroundColor/libraryContentColor and added dialogBackgroundColor/dialogContentColor across Compose modules.
• Introduced AboutLibrariesPluginAndroid for automatic Android build integration and deprecated the old registerAndroidTasks flag.
• Removed legacy deprecated APIs, updated .api snapshots, and refined migration and README documentation.

Reviewed Changes

Copilot reviewed 26 out of 26 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
plugin-build/plugin/src/main/kotlin/com/mikepenz/aboutlibraries/plugin/AboutLibrariesPluginAndroidExtension.kt	Generalized Android task registration with a customizable block parameter.
plugin-build/plugin/src/main/kotlin/com/mikepenz/aboutlibraries/plugin/AboutLibrariesPluginAndroid.kt	Added standalone Android Gradle plugin for auto‐registering resource tasks.
plugin-build/plugin/src/main/kotlin/com/mikepenz/aboutlibraries/plugin/AboutLibrariesPlugin.kt	Updated core plugin to invoke the new Android registration entry point unconditionally.
plugin-build/plugin/src/main/kotlin/com/mikepenz/aboutlibraries/plugin/AboutLibrariesExtension.kt	Cleaned up and removed now‐unused deprecated Android DSL properties.
aboutlibraries-compose/src/commonMain/kotlin/com/mikepenz/aboutlibraries/ui/compose/Defaults.kt	Renamed color interface properties and added dialog color variants.
README.md & MIGRATION.md	Updated docs and migration guide to reflect plugin split and color API changes.

Comments suppressed due to low confidence (1)

plugin-build/plugin/build.gradle.kts:28

• [nitpick] Consider adding automated tests to verify that the new Android-specific plugin (aboutlibsAndroidPlugin) correctly registers tasks and respects Gradle version requirements.

        create("aboutlibsAndroidPlugin") {

[Copilot]

Defaulting the block parameter to ::configureAndroidTasks causes the function to call itself recursively, leading to a stack overflow. Consider removing the default or referencing the intended overload (e.g., ::configureAndroidResourceTasks).

Suggested change

	block: (Project, AboutLibrariesExtension, @Suppress("DEPRECATION") com.android.build.gradle.api.BaseVariant) -> Unit = ::configureAndroidTasks,
	block: (Project, AboutLibrariesExtension, @Suppress("DEPRECATION") com.android.build.gradle.api.BaseVariant) -> Unit = ::configureAndroidTasks as (Project, AboutLibrariesExtension, com.android.build.gradle.api.BaseVariant) -> Unit,