feat: migrate android-maps-ktx into android-maps-utils (v6.0.0-rc03)

[dkhawk]

Summary

Consolidates all Kotlin reactive Coroutine/Flow/Builder extensions (maps-ktx and maps-utils-ktx from android-maps-ktx) directly into android-maps-utils, establishing a single canonical source of truth (v6.0.0-rc03). Fully rebased on latest main (ca970251).

Key Changes

1. Canonical Implementation Relocation (com.google.maps.android.*)
   • Migrated all 32 source KTX files into android-maps-utils modules (:library, :clustering, :data, :heatmaps).
   • Extensions (awaitMap(), mapClickEvents(), addMarker { ... }) now reside directly inside canonical non-ktx packages (com.google.maps.android, com.google.maps.android.model, com.google.maps.android.collections, com.google.maps.android.clustering, com.google.maps.android.data.geojson, com.google.maps.android.data.kml, com.google.maps.android.heatmaps).
2. Backward-Compatibility Bridge Layer (com.google.maps.android.ktx.*)
   • Preserved full legacy com.google.maps.android.ktx.* package structure via @Deprecated(level = DeprecationLevel.WARNING, replaceWith = ReplaceWith(...)) forwarding wrappers and typealiases.
   • Ensures zero breaking changes for existing codebases while guiding developers toward canonical replacements.
3. Comprehensive Test Suite & Verification
   • Migrated all KTX unit test suites with both Canonical Tests and Shim Tests to verify side-by-side execution (all 261 test tasks passed).
   • Resolved unit test runner and Robolectric download lock isolation issues in containerized environments.
4. Rebased on latest main
   • Rebased on top of ca970251 (including PRs feat(collections,clustering): complete Kotlin migration for core modules and apply optimizations #1766, build(deps): bump androidx.compose:compose-bom from 2026.06.01 to 2026.08.00 #1754, build(deps): bump androidx.appcompat:appcompat from 1.7.1 to 1.8.0 #1753, fix(data): prevent SSRF from untrusted KML/GeoJSON icon and GroundOverlay href #1758), seamlessly integrating the newly converted Kotlin collections and clustering managers.
5. Demo App & Documentation
   • Integrated KtxExtensionsDemoActivity into :demo illustrating both canonical and bridge builder usage without duplicate class issues.
   • Updated README.md, CHANGELOG.md, MIGRATION.md, and Gemini skill prompts with 6.0.0-rc03 notes.

[googlemaps-bot]

Code Coverage

Overall Project	49.79% -5.96%	🍏
Files changed	46.01%	❌

Module	Coverage
heatmaps	78.03% -6.24%	❌
library	66.47% -23.94%	❌
data	48.57% -1.52%	❌
clustering	32.4% -0.63%	🍏

Files

Module	File	Coverage
heatmaps	Heatmap.kt	0% -86.79%	❌
library	MarkerManager.kt	77.61% -8.26%	🍏
	GroundOverlayManager.kt	72.86% -11.56%	🍏
	PolylineManager.kt	72.86% -11.56%	🍏
	CircleManager.kt	72.86% -11.56%	🍏
	PolygonManager.kt	72.86% -11.56%	🍏
	FusedLocationProvider.kt	68.82% -31.18%	🍏
	LocationManager.kt	68.66% -28.17%	🍏
	StreetViewPanoramaView.kt	63.39% -34.7%	🍏
	GoogleMap.kt	57.99% -37.29%	❌
	PolylineOptions.kt	0% -66.67%	❌
	CircleOptions.kt	0% -66.67%	❌
	PolygonOptions.kt	0% -66.67%	❌
	GroundOverlayOptions.kt	0% -66.67%	❌
	TileOverlayOptions.kt	0% -66.67%	❌
	MarkerOptions.kt	0% -66.67%	❌
	StreetViewPanoramaCamera.kt	0% -73.68%	❌
	StreetViewPanoramaOrientation.kt	0% -73.68%	❌
	CameraPosition.kt	0% -73.68%	❌
	StreetViewPanoramaFragment.kt	0% -92.22%	❌
	Polyline.kt	0% -76.36%	❌
	MapView.kt	0% -92.22%	❌
	SupportMapFragment.kt	0% -82.93%	❌
	SupportStreetViewPanoramaFragment.kt	0% -92.22%	❌
	Polygon.kt	0% -69.41%	❌
	LatLng.kt	0% -50.72%	❌
	MapsInitializer.kt	0% -96.57%	❌
	MapFragment.kt	0% -82.93%	❌
data	Kml.kt	0% -80.8%	❌
	GeoJson.kt	0% -85.96%	❌
clustering	ClusterManagerFlows.kt	83.74% -16.26%	🍏
	PointExtensions.kt	0% -37.5%	❌