[feat](AI) add several AI related features

[cosven]

• user can input === {question} to chat with AI
• find standby using AI if standby is not found
  • add a config
• user can input ==> {title} - {artists_name} in search bar to play a song
• user can create a playlist based on plain text

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Future

• control player by chatting with AI

[coveralls]

Pull Request Test Coverage Report for Build 13100296951

Details

• 267 of 610 (43.77%) changed or added relevant lines in 15 files are covered.
• 5 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.6%) to 55.86%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
feeluown/gui/uimain/sidebar.py	8	9	88.89%
feeluown/library/standby.py	30	31	96.77%
feeluown/gui/widgets/selfpaint_btn.py	5	7	71.43%
feeluown/player/ai_radio.py	0	2	0.0%
feeluown/gui/ui.py	6	9	66.67%
feeluown/app/app.py	6	10	60.0%
feeluown/library/text2song.py	3	7	42.86%
feeluown/utils/aio.py	2	6	33.33%
feeluown/ai.py	8	25	32.0%
feeluown/library/library.py	45	63	71.43%

Files with Coverage Reduction	New Missed Lines	%
feeluown/library/library.py	1	63.47%
feeluown/library/text2song.py	1	14.29%
feeluown/player/ai_radio.py	3	21.74%

Totals
Change from base Build 13068324850:	-0.6%
Covered Lines:	10204
Relevant Lines:	18267

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💛 - Coveralls