[foolfuuka] support 'archive.wakarimasen.moe' (closes #1595)

docs/supportedsites.md

@@ -981,6 +981,12 @@ Consider all sites to be NSFW unless otherwise known.
     <td>Boards, Search Results, Threads</td>
     <td></td>
 </tr>
+<tr>
+    <td>Wakarimasen Archive</td>
+    <td>https://archive.wakarimasen.moe/</td>
+    <td>Boards, Search Results, Threads</td>
+    <td></td>
+</tr>
 
 <tr>
     <td colspan="4"><strong>FoOlSlide Instances</strong></td>