feat(ui): cinematic movie and series details pages and dashboard hero (#1792)

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

@@ -144,6 +144,11 @@ export interface Settings {
      * black bars. Off by default; only affects the built-in web players.
      */
     playerAmbientMode?: boolean;
+    /**
+     * Play a title's trailer, muted, behind the movie or series details a
+     * few seconds after the page opens. Off by default.
+     */
+    detailTrailerBackdrop?: boolean;
     /**
      * Dock the inline series player to the left and show an "Up Next"
      * episode rail in the leftover stage column on wide windows. On by