refactor: Retire the use of unmaintained custom-card-helpers (#1956)

- Closes #1295

src/camera-manager/engine-factory.ts

@@ -1,6 +1,6 @@
-import { HomeAssistant } from '@dermotduffy/custom-card-helpers';
 import { StateWatcherSubscriptionInterface } from '../card-controller/hass/state-watcher';
 import { CameraConfig } from '../config/types';
+import { HomeAssistant } from '../ha/types';
 import { localize } from '../localize/localize';
 import { BrowseMediaManager } from '../utils/ha/browse-media/browse-media-manager';
 import { EntityRegistryManager } from '../utils/ha/registry/entity';