refactor: Clean up & fix old code

Other changes:
- Renamed "getShortsWatchItem" to "getShortsVideoInfo".
- Fixed `ShortFormVideoInfo`. This never worked for me ever since it was introduced. Turned out it was just implemented incorrectly.
- Moved `basic_info` extraction to `MediaInfo`. Less of a pain to maintain as we only have to modify one file.
- Removed unneeded tsdoc comments.
- Fixed `Innertube#getStreamingData()`. Now it actually returns a deciphered format.
- Simplified some types.

src/parser/classes/livechat/UpdateToggleButtonTextAction.ts

@@ -1,7 +1,8 @@
 import Text from '../misc/Text.js';
 import { YTNode } from '../../helpers.js';
 import type { RawNode } from '../../index.js';
-class UpdateToggleButtonTextAction extends YTNode {
+
+export default class UpdateToggleButtonTextAction extends YTNode {
   static type = 'UpdateToggleButtonTextAction';
 
   default_text: string;
@@ -14,6 +15,4 @@ class UpdateToggleButtonTextAction extends YTNode {
     this.toggled_text = new Text(data.toggledText).toString();
     this.button_id = data.buttonId;
   }
-}
-
-export default UpdateToggleButtonTextAction;
+}