feat(watch): Android Wear Data Layer adapter + foreground service (#91-D)

android/app/build.gradle.kts

@@ -1,5 +1,6 @@
 plugins {
     id("com.android.application")
+    id("org.jetbrains.kotlin.android")
     // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
     id("dev.flutter.flutter-gradle-plugin")
 }
@@ -40,3 +41,7 @@ kotlin {
 flutter {
     source = "../.."
 }
+
+dependencies {
+    implementation("com.google.android.gms:play-services-wearable:19.0.0")
+}