Picta-dl

* Download Playlist (--yes-playlist) in first place

* Add PictaPlaylist extractor
* Option --no-playlist by default is True
* Update README.md

* Add picta-dl binary GNU/Linux (x86_64 with ubuntu-latest)
* Add SHA2-256SUMS picta-dl binary
* Update README.md

* Fix dump SHA2-256SUMS on Windows
* Add SHA2-256SUMS file
* Update icon picta-dl.ico

Extractors
* [youtube] Force old layout (25682, 25683, 25680, 25686)
* [youtube] Fix categories and improve tags extraction

Extractors
* [youtube] Fix uploader id and uploader URL extraction
* [youtube] Improve view count extraction
* [youtube] Fix upload date extraction (25677)
* [youtube] Fix thumbnails extraction (25676)
* [youtube] Fix playlist and feed extraction (25675)
+ [facebook] Add support for single-video ID links
+ [youtube] Extract chapters from JSON (24819)
+ [kaltura] Add support for multiple embeds on a webpage (25523)