perf: Change media fetches to be asynchronous to view render (#1702)

This is a fairly non-trivial change in terms of consequence, so a greater than average chance something breaks. This is necessary since some cameras (e.g. Reolink) are materially slower to fetch media, and this change substantially improves card responsiveness.

src/view/view.ts

@@ -4,6 +4,14 @@ import { FrigateCardView, ViewDisplayMode } from '../config/types.js';
 import { MediaQueries } from './media-queries';
 import { MediaQueriesResults } from './media-queries-results';
 
+declare module 'view' {
+  interface ViewContext {
+    loading?: {
+      query?: unknown;
+    };
+  }
+}
+
 interface ViewEvolveParameters {
   view?: FrigateCardView;
   camera?: string;