Added audio downloading, switched to yt-dlp

- enabling and disabling mods using config.json works now
- switched to yt-dlp (it supports YouTube without problems)
- added audio downloading
- changed 'mvd' mod tag to 'md'
- added filesize in qualities list
- changed thumbnail size 280x280 at most
- .webm and .mhtml extensions are ignored now
- fixed encoding errors in utils.get_md5 (they are ignored now, so not an actual fix, but it 100% won't break anythink)

utils.py

@@ -36,7 +36,7 @@ def get_all_mods() -> list[str]:
 def get_md5(data: str) -> str:
     ''' Returns MD5 for data '''
     md5_hash = hashlib.md5()
-    md5_hash.update(str(data).encode('ascii'))
+    md5_hash.update(str(data).encode('ascii', errors='ignore'))
     return md5_hash.hexdigest()