[girlsreleased] add support (#6200)

* [girlsreleased] add support
* Lint
* Change "galleries" to "sets"
    As it is on the site
* Add pagination
    Add tests
* Fix tests
* Remove leftover print()
* Don't remove first set
* Yield pages
* Add filename metadata
* [girlsreleased] Refactor
* Return models as array
* Add filename numbering
    Add date metadata
* Add URL metadata
* Spawn set extractor the right way
* Adjust model/site regex
* update
    - restructure some code
    - remove constructors
    - use f-strings
* expand tests
* update docs/supportedsites

docs/supportedsites.md

@@ -325,6 +325,12 @@ Consider all listed sites to potentially be NSFW.
     <td>Posts, Search Results</td>
     <td>Supported</td>
 </tr>
+<tr>
+    <td>Girlsreleased</td>
+    <td>https://girlsreleased.com/</td>
+    <td>Models, Sets, Sites</td>
+    <td></td>
+</tr>
 <tr>
     <td>Gofile</td>
     <td>https://gofile.io/</td>