[koofr] refactor (#8803)

https://github.com/mikf/gallery-dl/issues/8803#issuecomment-3708215475
https://github.com/mikf/gallery-dl/issues/8803#issuecomment-3708358606

- add 'recursive' option, remove 'zip'
- recurse into subdirectories
- add 'path' metadata
- remove 'count' & 'num' metadata
- update default directory & archive format

docs/configuration.rst

@@ -4073,14 +4073,18 @@ Description
     the first in the list gets chosen (usually `mp3`).
 
 
-extractor.koofr.zip
--------------------
+extractor.koofr.recursive
+-------------------------
 Type
     ``bool``
 Default
-    ``false``
+    ``true``
 Description
-    Download shared `/links/` with multiple files as a single `.zip` file.
+    ``true``
+        Recursively descent into subfolders
+        while downloading individual files.
+    ``false``
+        Download shared `/links/` with multiple files as a single `.zip` file.
 
 
 extractor.lolisafe.domain

docs/gallery-dl.conf

@@ -520,7 +520,7 @@
         },
         "koofr":
         {
-            "zip": false
+            "recursive": true
         },
         "luscious":
         {