feat: Implement baseline profile generation and startup benchmarking

- Added baseline profile generator for Rosetta Messenger to optimize startup performance.
- Created startup benchmark tests to measure cold start times under different compilation modes.
- Introduced a new Gradle module for baseline profile and benchmark tests.
- Updated ChatsListViewModel to show loading skeleton while data is being fetched.
- Improved keyboard handling in MessageInputBar by using SHOW_IMPLICIT instead of SHOW_FORCED.
- Minor code cleanups and optimizations across various components.

settings.gradle.kts

@@ -16,3 +16,4 @@ dependencyResolutionManagement {
 
 rootProject.name = "rosetta-android"
 include(":app")
+include(":baselineprofile")