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.

baselineprofile/build.gradle.kts

@@ -0,0 +1,33 @@
+plugins {
+    id("com.android.test")
+    id("org.jetbrains.kotlin.android")
+}
+
+android {
+    namespace = "com.rosetta.messenger.baselineprofile"
+    compileSdk = 34
+
+    defaultConfig {
+        minSdk = 28 // Baseline Profiles require API 28+
+        targetSdk = 34
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+
+    kotlinOptions {
+        jvmTarget = "11"
+    }
+
+    targetProjectPath = ":app"
+}
+
+dependencies {
+    implementation("androidx.test.ext:junit:1.1.5")
+    implementation("androidx.test.espresso:espresso-core:3.5.1")
+    implementation("androidx.test.uiautomator:uiautomator:2.2.0")
+    implementation("androidx.benchmark:benchmark-macro-junit4:1.2.2")
+}