feat(clustering): add SuperCluster algorithm demo and configurable popup menu controls

[dkhawk]

Summary

This draft PR integrates the new high-performance SuperClusterAlgorithm into the Maps Compose sample demo app (maps-app), replacing horizontal chip bars with an elegant floating Material 3 control bar featuring popup menus and configurable dataset sizes up to 100,000 markers.

Note: This PR is currently in Draft state for integration testing and benchmarking against the upcoming android-maps-utils-clustering release containing SuperClusterAlgorithm (PR googlemaps/android-maps-utils#1799).

Key Additions & Improvements

1. SuperCluster Integration:

   • Added SuperClusterNative mode: leverages SuperClusterAlgorithm with DefaultClusterRenderer, compact SI unit notation (k/m), and cached bitmap badges for 60fps pan/zoom across tens of thousands of markers.
   • Added SuperClusterCompose mode: uses Compose UI cluster badges while using native marker rendering for unclustered pins (clusterItemContent = null) to avoid allocating thousands of ComposeView hierarchies on the UI thread.

2. 50K & 100K Dataset Buckets:

   • Added 50,000 (50K) and 100,000 (100K) marker buckets alongside 10, 500, 2,500, 10,000, and 25,000.
   • Tuned regional coordinate dispersion (spread = 4.0) for realistic multi-level hierarchical clustering across Singapore and neighboring regions.

3. Floating Control Bar with Popup Menus (ClusteringControlBar):

   • Replaced clunky horizontal chip rows with a compact floating Material 3 Card pinned at TopCenter.
   • Algorithm Popup Menu: FilledTonalButton with ArrowDropDown to pick between all available clustering modes with selection checkmarks.
   • Dataset Size Popup Menu: FilledTonalButton with ArrowDropDown to pick marker counts from 10 to 100K.
   • Directly Visible Animation Toggle: A FilterChip labeled Anim ON / Anim OFF directly visible on the bar to evaluate the performance difference between 300ms frame interpolation and instant zero-overhead clustering.

4. Heap Headroom:

   • Enabled android:largeHeap="true" in maps-app/src/main/AndroidManifest.xml for smooth mega-scale testing.