chore: add real Firebase config and messaging dependency

- google-services.json now has real Firebase project values
- Added firebase-messaging-ktx dependency (was missing)
- Updated google-services plugin to 4.4.4

android/app/build.gradle.kts

@@ -66,6 +66,8 @@ dependencies {
     implementation("androidx.core:core-splashscreen:1.0.1")
     implementation("androidx.work:work-runtime-ktx:2.10.0")
 
+    implementation(platform("com.google.firebase:firebase-bom:34.14.1"))
+    implementation("com.google.firebase:firebase-analytics")
     implementation("com.google.firebase:firebase-messaging-ktx:24.1.0")
 
     debugImplementation("androidx.compose.ui:ui-tooling")