feat(playback): slide-in channel list for fullscreen playback (#1519)

libs/shared/interfaces/src/lib/settings.interface.ts

@@ -150,6 +150,14 @@ export interface Settings {
      * missing values mean enabled. Only affects the built-in web players.
      */
     playerUpNextRail?: boolean;
+    /**
+     * Slide the live channel list over the video in fullscreen — resting the
+     * mouse on the left edge, tapping that edge on touch, or pressing `C` —
+     * so a channel can be switched without leaving fullscreen. On by
+     * default; missing values mean enabled. Applies to the shared player
+     * controls (HTML5, Video.js, ArtPlayer, Embedded MPV frame-copy).
+     */
+    fullscreenChannelPanel?: boolean;
     /**
      * When a movie fails to play and the same film exists in another imported
      * playlist, switch to it automatically instead of showing the error.