[danbooru] add 'favgroup' extractor

docs/configuration.rst

@@ -1886,12 +1886,14 @@ Description
 
 extractor.[Danbooru].pool.order-posts
 -------------------------------------
+extractor.[Danbooru].favgroup.order-posts
+-----------------------------------------
 Type
     ``string``
 Default
     ``"pool"``
 Description
-    Controls the order in which pool posts are returned.
+    Controls the order in which ``pool``/``favgroup`` posts are returned.
 
     ``"pool"`` | ``"pool_asc"`` | ``"asc"`` | ``"asc_pool"``
         Pool order

docs/gallery-dl.conf

@@ -792,6 +792,9 @@
             "threshold": "auto",
             "ugoira"   : false,
 
+            "favgroup": {
+                "order-posts": "pool"
+            },
             "pool": {
                 "order-posts": "pool"
             }

docs/supportedsites.md

@@ -1190,25 +1190,25 @@ Consider all listed sites to potentially be NSFW.
 <tr>
     <td>Danbooru</td>
     <td>https://danbooru.donmai.us/</td>
-    <td>Artists, Artist Searches, Pools, Popular Images, Posts, Tag Searches</td>
+    <td>Artists, Artist Searches, Favorite Groups, Pools, Popular Images, Posts, Tag Searches</td>
     <td>Supported</td>
 </tr>
 <tr>
     <td>ATFBooru</td>
     <td>https://booru.allthefallen.moe/</td>
-    <td>Artists, Artist Searches, Pools, Popular Images, Posts, Tag Searches</td>
+    <td>Artists, Artist Searches, Favorite Groups, Pools, Popular Images, Posts, Tag Searches</td>
     <td>Supported</td>
 </tr>
 <tr>
     <td>Aibooru</td>
     <td>https://aibooru.online/</td>
-    <td>Artists, Artist Searches, Pools, Popular Images, Posts, Tag Searches</td>
+    <td>Artists, Artist Searches, Favorite Groups, Pools, Popular Images, Posts, Tag Searches</td>
     <td>Supported</td>
 </tr>
 <tr>
     <td>Booruvar</td>
     <td>https://booru.borvar.art/</td>
-    <td>Artists, Artist Searches, Pools, Popular Images, Posts, Tag Searches</td>
+    <td>Artists, Artist Searches, Favorite Groups, Pools, Popular Images, Posts, Tag Searches</td>
     <td>Supported</td>
 </tr>