docs:add license checker.

[SkyeBeFreeman]

No description provided.

[chuntaojun]

LGTM

[codecov]

Codecov Report

Attention: Patch coverage is 5.08475% with 56 lines in your changes missing coverage. Please review.

Project coverage is 20.46%. Comparing base (0234c19) to head (7bb143a).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
.../plugins/stat/prometheus/exporter/PushGateway.java	5.08%	56 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #573      +/-   ##
============================================
- Coverage     20.54%   20.46%   -0.08%     
- Complexity      828      833       +5     
============================================
  Files           328      334       +6     
  Lines         13047    13233     +186     
  Branches       1673     1702      +29     
============================================
+ Hits           2680     2708      +28     
- Misses        10019    10171     +152     
- Partials        348      354       +6     

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