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

- Closes #1295

src/types.ts

@@ -1,11 +1,5 @@
-import {
-  HomeAssistant,
-  LovelaceCard,
-  LovelaceCardConfig,
-  LovelaceCardEditor,
-  Themes,
-} from '@dermotduffy/custom-card-helpers';
 import { z } from 'zod';
+import { LovelaceCard, LovelaceCardConfig, LovelaceCardEditor } from './ha/types';
 
 export type ClipsOrSnapshots = 'clips' | 'snapshots';
 export type ClipsOrSnapshotsOrAll = 'clips' | 'snapshots' | 'all';
@@ -19,13 +13,6 @@ export class AdvancedCameraCardError extends Error {
   }
 }
 
-export interface ExtendedHomeAssistant extends HomeAssistant {
-  hassUrl(path?): string;
-  themes: Themes & {
-    darkMode?: boolean;
-  };
-}
-
 export interface MediaLoadedCapabilities {
   supports2WayAudio?: boolean;
   supportsPause?: boolean;