Cleanup some code (see desc)

* `--get-comments` doesn't imply `--write-info-json` if `-J`, `-j` or `--print-json` are used
* Don't pass `config_location` to `YoutubeDL` (it is unused)
* [bilibiliaudio] Recognize the file as audio-only
* Update gitignore
* Fix typos

yt_dlp/extractor/bilibili.py

@@ -558,6 +558,7 @@ class BilibiliAudioIE(BilibiliAudioBaseIE):
         formats = [{
             'url': play_data['cdns'][0],
             'filesize': int_or_none(play_data.get('size')),
+            'vcodec': 'none'
         }]
 
         song = self._call_api('song/info', au_id)