Optional setting for one click pause w/ d-pad center (#160)

Closes #152 

Adds a setting to enable one-click-pausing via the D-Pad center button.
It is disabled by default.

If enabled, when the video is playing, it will be pause and show the
controls which is just like pressing the Pause or Play/Pause button.

If enable, when the video is paused and controls is not showing, it will
resume playback including using the skip back on resume setting.

app/src/main/java/com/github/damontecres/wholphin/preferences/AppPreference.kt

@@ -654,6 +654,18 @@ sealed interface AppPreference<T> {
                 summaryOn = R.string.enabled,
                 summaryOff = R.string.disabled,
             )
+
+        val OneClickPause =
+            AppSwitchPreference(
+                title = R.string.one_click_pause,
+                defaultValue = false,
+                getter = { it.playbackPreferences.oneClickPause },
+                setter = { prefs, value ->
+                    prefs.updatePlaybackPreferences { oneClickPause = value }
+                },
+                summaryOn = R.string.one_click_pause_summary_on,
+                summaryOff = R.string.disabled,
+            )
     }
 }
 
@@ -732,6 +744,7 @@ val advancedPreferences =
             title = R.string.playback,
             preferences =
                 listOf(
+                    AppPreference.OneClickPause,
                     AppPreference.SkipIntros,
                     AppPreference.SkipOutros,
                     AppPreference.SkipCommercials,

app/src/main/java/com/github/damontecres/wholphin/ui/playback/PlaybackKeyHandler.kt

@@ -23,6 +23,7 @@ class PlaybackKeyHandler(
     private val controllerViewState: ControllerViewState,
     private val updateSkipIndicator: (Long) -> Unit,
     private val skipBackOnResume: Duration?,
+    private val oneClickPause: Boolean,
     private val onInteraction: () -> Unit,
 ) {
     fun onKeyEvent(it: KeyEvent): Boolean {
@@ -33,7 +34,7 @@ class PlaybackKeyHandler(
             result = false
         } else if (it.type != KeyEventType.KeyUp) {
             result = false
-        } else if (isDpad(it)) {
+        } else if (isDirectionalDpad(it) || isEnterKey(it)) {
             if (!controllerViewState.controlsVisible) {
                 if (skipWithLeftRight && it.key == Key.DirectionLeft) {
                     updateSkipIndicator(-seekBack.inWholeMilliseconds)
@@ -41,6 +42,15 @@ class PlaybackKeyHandler(
                 } else if (skipWithLeftRight && it.key == Key.DirectionRight) {
                     player.seekForward(seekForward)
                     updateSkipIndicator(seekForward.inWholeMilliseconds)
+                } else if (oneClickPause && isEnterKey(it)) {
+                    Util.handlePlayPauseButtonAction(player)
+                    if (!player.isPlaying) {
+                        controllerViewState.showControls()
+                    } else {
+                        skipBackOnResume?.let {
+                            player.seekBack(it)
+                        }
+                    }
                 } else {
                     controllerViewState.showControls()
                 }

app/src/main/java/com/github/damontecres/wholphin/ui/playback/PlaybackPage.kt

@@ -208,6 +208,7 @@ fun PlaybackPage(
                     updateSkipIndicator = updateSkipIndicator,
                     skipBackOnResume = preferences.appPreferences.playbackPreferences.skipBackOnResume,
                     onInteraction = viewModel::reportInteraction,
+                    oneClickPause = preferences.appPreferences.playbackPreferences.oneClickPause,
                 )
 
             val showSegment =