restructured manifest and plugins loading; updated plugins

plugins/youtube_download/yt_dlp/extractor/substack.py

@@ -12,7 +12,7 @@ from ..utils.traversal import traverse_obj
 
 
 class SubstackIE(InfoExtractor):
-    _VALID_URL = r'https?://(?P<username>[\w-]+)\.substack\.com/p/(?P<id>[\w-]+)'
+    _VALID_URL = r'https?://[\w-]+\.substack\.com/p/(?P<id>[\w-]+)'
     _TESTS = [{
         'url': 'https://haleynahman.substack.com/p/i-made-a-vlog?s=r',
         'md5': 'f27e4fc6252001d48d479f45e65cdfd5',
@@ -63,6 +63,29 @@ class SubstackIE(InfoExtractor):
             'uploader_id': '61579',
         },
     }]
+    _WEBPAGE_TESTS = [{
+        'url': 'https://www.mollymovieclub.com/p/interstellar',
+        'info_dict': {
+            'id': '53602801',
+            'ext': 'mpga',
+            'title': 'Interstellar',
+            'description': 'Listen now | Episode One',
+            'thumbnail': r're:https?://.+\.jpeg',
+            'uploader': 'Molly Movie Club',
+            'uploader_id': '839621',
+        },
+    }, {
+        'url': 'https://www.blockedandreported.org/p/episode-117-lets-talk-about-depp',
+        'info_dict': {
+            'id': '57962052',
+            'ext': 'mpga',
+            'title': 'md5:855b2756f0ee10f6723fa00b16266f8d',
+            'description': 'The takes the takes the takes',
+            'thumbnail': r're:https?://.+\.jpeg',
+            'uploader': 'Blocked and Reported',
+            'uploader_id': '500230',
+        },
+    }]
 
     @classmethod
     def _extract_embed_urls(cls, url, webpage):
@@ -93,7 +116,7 @@ class SubstackIE(InfoExtractor):
         return formats, subtitles
 
     def _real_extract(self, url):
-        display_id, username = self._match_valid_url(url).group('id', 'username')
+        display_id = self._match_id(url)
         webpage = self._download_webpage(url, display_id)
 
         webpage_info = self._parse_json(self._search_json(