[nudostar] add support (#5735 #6556)

* Drafting initial basic extractor layout
* Better debug logging
* Update nudostar.py
    Still tinkering
* Update nudostar.py
    Basic extractor is working. Now starting on Gallery
* Update nudostar.py
    Still a work in progress.
    Got individual posts working, galleries are not.
* Update nudostar.py
* Site now appears working. Added Tests.
* PEP Updates
* PEP - Line Length Updates
* Update nudostar.py
    Resolving PEP8 issues.
* update 'gallery' extractor, rename to 'model'
* update 'image' extractor
* expand tests
* update docs/supportedsites

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Co-authored-by: Mike Fährmann <mike_faehrmann@web.de>

.gitignore

@@ -67,3 +67,4 @@ target/
 
 /*.snap
 /*_source.tar.bz2
+/gallery-dl