feat(android-app): extract ModelList, add build configs and SDK build script

Android app optimization:
- Extract model registration to data/ModelList.kt (centralized, declarative)
- Create data/models/AppModel.kt data class with supportsLoraAdapters field
- Simplify RunAnywhereApplication to delegate to ModelList.setupModels()
- Remove runBlocking calls in SDK initialization

Build system:
- Add build-sdk.sh wrapper script for full C++ + Kotlin build pipeline
- Add Gradle tasks: buildCpp, buildFullSdk, copyNativeLibs
- Replace 10 old IntelliJ run configs with 13 new ones covering
  the full build pipeline including C++ native builds

Author: Siddhesh2377