chore(license): add ignore file/path configs to .rat-excludes

[acelyc111]

#823

• adds ignore file/path configs to .rat-excludes
• adds missing license header

Summary output of apache-rat:

$ java -jar ../apache-rat-0.15.jar -d ./ -E ./.rat-excludes
Ignored 0 lines in your exclusion files as comments or empty lines.

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Summary
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Generated at: 2022-09-27T23:52:00+08:00

Notes: 3
Binaries: 14
Archives: 0
Standards: 1629

Apache Licensed: 1041
Generated Documents: 0

JavaDocs are generated, thus a license header is optional.
Generated files do not require license headers.

0 Unknown Licenses

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[acelyc111]

Yes, I removed the last blank line to make apache-rat happy

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (master@56339c0). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1175   +/-   ##
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  Coverage          ?   53.40%           
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  Files             ?       27           
  Lines             ?     2522           
  Branches          ?        0           
=========================================
  Hits              ?     1347           
  Misses            ?     1130           
  Partials          ?       45           

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