[pornpics] add 'category' and 'listing' extractors (#8662)

* [pornpics] add category and listing extractors

Add support for:
- Category pages like /ass/, /milf/, /blonde/ etc.
- Listing pages like /popular/, /recent/, /rating/, /likes/, /views/, /comments/

Category pages use JSON pagination like tags/search.
Listing pages don't support JSON pagination and use different HTML structure.

* [pornpics] simplify category pattern via class ordering

- Move PornpicsCategoryExtractor after PornpicsListingExtractor
  so it acts as catch-all, eliminating need for negative lookahead
- Use list comprehension in PornpicsListingExtractor.galleries()

* update docs/supportedsites

test/results/pornpics.py

@@ -145,4 +145,46 @@ __tests__ = (
     "#class"   : pornpics.PornpicsSearchExtractor,
 },
 
+{
+    "#url"     : "https://www.pornpics.com/ass/",
+    "#category": ("", "pornpics", "category"),
+    "#class"   : pornpics.PornpicsCategoryExtractor,
+    "#pattern" : pornpics.PornpicsGalleryExtractor.pattern,
+    "#range"   : "1-50",
+    "#count"   : 50,
+},
+
+{
+    "#url"     : "https://www.pornpics.com/milf/",
+    "#category": ("", "pornpics", "category"),
+    "#class"   : pornpics.PornpicsCategoryExtractor,
+},
+
+{
+    "#url"     : "https://pornpics.com/de/blonde",
+    "#category": ("", "pornpics", "category"),
+    "#class"   : pornpics.PornpicsCategoryExtractor,
+},
+
+{
+    "#url"     : "https://www.pornpics.com/popular/",
+    "#category": ("", "pornpics", "listing"),
+    "#class"   : pornpics.PornpicsListingExtractor,
+    "#pattern" : pornpics.PornpicsGalleryExtractor.pattern,
+    "#range"   : "1-20",
+    "#count"   : 20,
+},
+
+{
+    "#url"     : "https://www.pornpics.com/recent/",
+    "#category": ("", "pornpics", "listing"),
+    "#class"   : pornpics.PornpicsListingExtractor,
+},
+
+{
+    "#url"     : "https://pornpics.com/fr/rating",
+    "#category": ("", "pornpics", "listing"),
+    "#class"   : pornpics.PornpicsListingExtractor,
+},
+
 )