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/app/build.gradle.kts

@@ -1,5 +1,6 @@
 plugins {
     alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.compose)
     alias(libs.plugins.kotlin.serialization)
     alias(libs.plugins.androidx.baselineprofile)
 }
@@ -10,6 +11,7 @@ android {
     ndkVersion = "29.0.14206865"
 
     buildFeatures {
+        compose = true
         viewBinding = true
         buildConfig = true
         resValues = true
@@ -150,6 +152,15 @@ dependencies {
     implementation(libs.kotlinx.coroutines.android)
 
     implementation(libs.filepicker)
+
+    // Jetpack Compose
+    implementation(platform(libs.androidx.compose.bom))
+    implementation(libs.androidx.activity.compose)
+    implementation(libs.androidx.compose.material.icons)
+    implementation(libs.androidx.compose.material3)
+    implementation(libs.androidx.compose.ui)
+    debugImplementation(libs.androidx.compose.ui.tooling)
+    debugImplementation(libs.androidx.compose.ui.tooling.preview)
 }
 
 fun getGitVersion(): String {