backend/playlists: add support for playlist related operations

[vnghia]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 58.39695% with 109 lines in your changes missing coverage. Please review.

Project coverage is 81.22%. Comparing base (19a6db9) to head (e46aca6).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
nghe-backend/src/route/playlists/get_playlists.rs	12.00%	21 Missing and 1 partial ⚠️
nghe-backend/src/route/playlists/get_playlist.rs	13.63%	18 Missing and 1 partial ⚠️
nghe-backend/src/orm/playlist/permission.rs	64.28%	7 Missing and 3 partials ⚠️
nghe-backend/src/orm/playlists.rs	41.17%	8 Missing and 2 partials ⚠️
nghe-backend/src/orm/id3/song/short.rs	30.76%	8 Missing and 1 partial ⚠️
nghe-backend/src/orm/playlist/full.rs	80.76%	0 Missing and 5 partials ⚠️
nghe-backend/src/orm/playlists_songs.rs	77.77%	0 Missing and 4 partials ⚠️
nghe-api/src/playlists/create_playlist.rs	66.66%	1 Missing and 2 partials ⚠️
nghe-api/src/playlists/get_playlists.rs	0.00%	3 Missing ⚠️
nghe-backend/src/orm/playlist/short.rs	82.35%	0 Missing and 3 partials ⚠️
... and 13 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #523      +/-   ##
==========================================
- Coverage   81.76%   81.22%   -0.55%     
==========================================
  Files         173      194      +21     
  Lines        5013     5257     +244     
  Branches     5013     5257     +244     
==========================================
+ Hits         4099     4270     +171     
- Misses        594      644      +50     
- Partials      320      343      +23     

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