Add compose dependencies for Android and empty NetplaySetupActivity

Derive compose colour theming from the existing XML styles already set at the activity level.

Source/Android/build.gradle.kts

@@ -4,6 +4,7 @@ plugins {
     alias(libs.plugins.android.library) apply false
     alias(libs.plugins.android.test) apply false
     alias(libs.plugins.androidx.baselineprofile) apply false
+    alias(libs.plugins.kotlin.compose) apply false
 }
 
 buildscript {