user preferences - chord type

src/app/services/user.service.ts

@@ -18,4 +18,8 @@ export class UserService {
       switchMap(auth => this.db.doc$<User>('user/' + auth.uid))
     );
   }
+
+  public async update$(uid: string, data: Partial<User>): Promise<void> {
+    await this.db.doc<User>('user/' + uid).update(data);
+  }
 }

src/app/services/user.ts

@@ -1,5 +1,8 @@
+import {ChordMode} from '../widget-modules/components/song-text/song-text.component';
+
 export interface User {
   id: string;
   name: string;
   role: 'admin';
+  chordMode: ChordMode
 }