feat: scaffold Android project with dependencies

Made-with: Cursor

app/src/main/java/xyz/cottongin/radio247/MainActivity.kt

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+package xyz.cottongin.radio247
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.tooling.preview.Preview
+
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContent {
+            Radio247Placeholder()
+        }
+    }
+}
+
+@Composable
+private fun Radio247Placeholder() {
+    Text("24/7 Radio")
+}
+
+@Preview(showBackground = true)
+@Composable
+private fun Radio247PlaceholderPreview() {
+    Radio247Placeholder()
+}

app/src/main/java/xyz/cottongin/radio247/RadioApplication.kt

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+package xyz.cottongin.radio247
+
+import android.app.Application
+
+class RadioApplication : Application()

app/src/main/java/xyz/cottongin/radio247/service/RadioPlaybackService.kt

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+package xyz.cottongin.radio247.service
+
+import android.app.Service
+import android.content.Intent
+import android.os.IBinder
+
+/**
+ * Stub for the media playback foreground service.
+ * Will be implemented in a later task.
+ */
+class RadioPlaybackService : Service() {
+    override fun onBind(intent: Intent?): IBinder? = null
+}