feat: pip for timer preview (#1862)

---------

Co-authored-by: Shobhit Nagpal <74096450+Shobhit-Nagpal@users.noreply.github.com>
Co-authored-by: Carlos Valente <carlosvalente@pm.me>

apps/client/src/declarations/declaration.d.ts

@@ -19,6 +19,11 @@ declare global {
     process: {
       type: string;
     };
+    // Experimental browser feature
+    documentPictureInPicture: {
+      requestWindow: () => Promise<Window>;
+      window: Window;
+    };
   }
 }