fix: allow type to be 'text' or 'audio' and now text_type is optional because you don't pass text_type for multi-track audio

Author: dylanjha

src/video/domain.ts

@@ -217,8 +217,8 @@ export interface CreatePlaybackIdParams {
 
 export interface CreateTrackParams {
   url: string;
-  type: 'text';
-  text_type: 'subtitles';
+  type: 'text' | 'audio';
+  text_type?: 'subtitles';
   language_code: string;
   name?: string;
   closed_captions?: boolean;

src/video/resources/assets.ts

@@ -265,7 +265,7 @@ export class Assets extends Base {
     }
 
     if (!params) {
-      return Promise.reject(new Error('Text track params are required'));
+      return Promise.reject(new Error('Track params are required'));
     }
     return this.http.post(`${buildBasePath(assetId)}/tracks`, params);
   }