[Android] Add Gradle repository that translates to Java GN targets

[austinh0]

Problem

• Android projects typically use Gradle to manage dependencies. CHIP Java code uses GN, so we can't easily add the Android dependencies we want.

Change overview

• Add a Gradle repository in third_party/android_deps, with tasks defined in build.gradle and deps defined in android_deps.gradle.
• Add set_up_android_deps.py, which invokes Gradle to downloads JARs and generates a BUILD.gn from Gradle's dependency graph. Made this script a step in the Android scripts and IDE build.
• Add dependency on androidx.annotation, and use @Nullable in ChipDeviceController as proof of concept.

Testing

• Mostly covered by [Android] Expand Java GN rules to support more complex usecases #9876
• Tested script and IDE build manually.

[woody-apple]

@saurabhst @andy31415 @Damian-Nordic ?