Massive project maintenance and fixes

[cyrmax]

List of changes:

• Massive code refactoring with many autofixes and batch edits;
• finetuning of linter and formatter configuration;
• Introducing uv support;
• More explicit requirements definition to avoid compatibility issues with newest httpx;
• ReadMe improvements;
• Added support for new Yandex Music link formats (with yandex.com and without /album/ in path);
• Other improvements.

After this update I do recommend to re-deploy the bot from scratch (of course while keeping the config file). Cache file removal is also recommended.

[OzancanKaratas]

@cyrmax, can we use yt-dlp's search function instead of youtube-search-python? As far as I know, youtube-search-python is no longer actively developed.

[grishakonzalaev]

No module mpv in requirements.txt

[hwangsihu]

Python 3.14 now works fine.