feat(cache): add cache table and flush cache option to settings

also increases tmdb cache times to about 6 hours (12 hours for detail requests)

server/api/themoviedb/index.ts

@@ -148,7 +148,7 @@ class TheMovieDb extends ExternalAPI {
             append_to_response: 'credits,external_ids,videos',
           },
         },
-        900
+        43200
       );
 
       return data;
@@ -174,7 +174,7 @@ class TheMovieDb extends ExternalAPI {
               'aggregate_credits,credits,external_ids,keywords,videos',
           },
         },
-        900
+        43200
       );
 
       return data;