feat: add "regex" option to id-naming-convention

[seleb]

hey there! i ran into a case where id-naming-convention rule would be helpful, but the provided options are too strict to easily adopt (it's a large repo with multiple competing standards). this updates the rule to support a custom regex, which should hopefully make it flexible enough to cover any cases which deviate from the common standards

[yeonjuan]

Hi @seleb Thanks for the contribution! The new options seems nice.
Could you update the docs? - docs/rules/id-naming-convention.md

[codecov]

Codecov Report

Merging #166 (feba696) into main (81c7e48) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #166   +/-   ##
=======================================
  Coverage   98.27%   98.27%           
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  Files          47       47           
  Lines        1099     1102    +3     
  Branches      282      285    +3     
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+ Hits         1080     1083    +3     
  Misses         19       19           

Flag	Coverage Δ
unittest	98.27% <100.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...es/eslint-plugin/lib/rules/id-naming-convention.js	90.90% <100.00%> (+1.43%)	⬆️

[yeonjuan]

@seleb LGTM! Thanks !! Will be released this weekend