feat: add no-invalid-role rule

[yeonjuan]

ref #54

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.36%. Comparing base (b4a6822) to head (ed3d18a).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #257      +/-   ##
==========================================
+ Coverage   98.33%   98.36%   +0.02%     
==========================================
  Files          63       64       +1     
  Lines        1745     1774      +29     
  Branches      472      479       +7     
==========================================
+ Hits         1716     1745      +29     
  Misses         29       29              

Flag	Coverage Δ
unittest	98.36% <100.00%> (+0.02%)	⬆️

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Files with missing lines	Coverage Δ
packages/eslint-plugin/lib/rules/index.js	100.00% <100.00%> (ø)
...ackages/eslint-plugin/lib/rules/no-invalid-role.js	100.00% <100.00%> (ø)