library: add protocol SupportsDiscoveryToplist

[cosven]

Toplist -> 排行榜

[coveralls]

Pull Request Test Coverage Report for Build 8986871875

Details

• 79 of 189 (41.8%) changed or added relevant lines in 8 files are covered.
• 5 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.05%) to 55.241%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
feeluown/gui/pages/recommendation.py	1	3	33.33%
feeluown/gui/uimain/sidebar.py	20	28	71.43%
feeluown/gui/pages/toplist.py	9	26	34.62%
feeluown/gui/drawers.py	15	33	45.45%
feeluown/gui/components/avatar.py	13	33	39.39%
feeluown/gui/pages/homepage.py	14	59	23.73%

Files with Coverage Reduction	New Missed Lines	%
feeluown/gui/drawers.py	1	52.1%
feeluown/gui/components/avatar.py	2	28.93%
feeluown/gui/pages/homepage.py	2	26.36%

Totals
Change from base Build 8771972655:	-0.05%
Covered Lines:	9771
Relevant Lines:	17688

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💛 - Coveralls