[chevereto] add generic extractors (#4664)

- support jpgfish
- support pixl.li / pixl.is (#3179, #4357)

docs/supportedsites.md

@@ -427,12 +427,6 @@ Consider all sites to be NSFW unless otherwise known.
     <td>Games</td>
     <td></td>
 </tr>
-<tr>
-    <td>JPG Fish</td>
-    <td>https://jpg1.su/</td>
-    <td>Albums, individual Images, User Profiles</td>
-    <td></td>
-</tr>
 <tr>
     <td>Keenspot</td>
     <td>http://www.keenspot.com/</td>
@@ -998,6 +992,22 @@ Consider all sites to be NSFW unless otherwise known.
     <td></td>
 </tr>
 
+<tr>
+    <td colspan="4"><strong>Chevereto Instances</strong></td>
+</tr>
+<tr>
+    <td>JPG Fish</td>
+    <td>https://jpg2.su/</td>
+    <td>Albums, individual Images, User Profiles</td>
+    <td></td>
+</tr>
+<tr>
+    <td>Pixl</td>
+    <td>https://pixl.li/</td>
+    <td>Albums, individual Images, User Profiles</td>
+    <td></td>
+</tr>
+
 <tr>
     <td colspan="4"><strong>Danbooru Instances</strong></td>
 </tr>