feat: Android TV support (#503)

Co-authored-by: PartyDonut <PartyDonut@users.noreply.github.com>

android/app/src/main/kotlin/nl/jknaapen/fladder/VideoPlayerActivity.kt

@@ -0,0 +1,54 @@
+package nl.jknaapen.fladder
+
+import android.graphics.PixelFormat
+import android.os.Build
+import android.os.Bundle
+import android.view.WindowManager
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+import androidx.annotation.OptIn
+import androidx.annotation.RequiresApi
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalContext
+import androidx.media3.common.util.UnstableApi
+import nl.jknaapen.fladder.composables.controls.CustomVideoControls
+import nl.jknaapen.fladder.objects.VideoPlayerObject
+import nl.jknaapen.fladder.player.ExoPlayer
+import nl.jknaapen.fladder.utility.ScaledContent
+import nl.jknaapen.fladder.utility.leanBackEnabled
+
+class VideoPlayerActivity : ComponentActivity() {
+    @RequiresApi(Build.VERSION_CODES.O)
+    override fun onCreate(savedInstanceState: Bundle?) {
+        enableEdgeToEdge()
+        super.onCreate(savedInstanceState)
+        VideoPlayerObject.currentActivity = this
+
+        window.setFlags(
+            WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED,
+            WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED
+        )
+
+        window.setFormat(PixelFormat.TRANSLUCENT)
+
+        setContent {
+            VideoPlayerTheme {
+                VideoPlayerScreen()
+            }
+        }
+    }
+}
+
+@RequiresApi(Build.VERSION_CODES.O)
+@OptIn(UnstableApi::class)
+@Composable
+fun VideoPlayerScreen(
+) {
+    val leanBackEnabled = leanBackEnabled(LocalContext.current)
+    ExoPlayer { player ->
+        ScaledContent(if (leanBackEnabled) 0.50f else 1f) {
+            CustomVideoControls(player)
+        }
+    }
+}