Introduce paths and paths-ignore inputs.

[cristiangreco]

These inputs can be used to build an allowlist and blocklist of patterns
where the action searches for Gradle Wrapper files to be updated.

[codecov-commenter]

Codecov Report

Merging #383 (d4a61bc) into master (43a4527) will increase coverage by 1.06%.
The diff coverage is 97.72%.

@@            Coverage Diff             @@
##           master     #383      +/-   ##
==========================================
+ Coverage   83.46%   84.53%   +1.06%     
==========================================
  Files          15       16       +1     
  Lines         502      543      +41     
  Branches       65       72       +7     
==========================================
+ Hits          419      459      +40     
- Misses         83       84       +1     

Impacted Files	Coverage Δ
src/wrapper/find.ts	97.22% <97.22%> (ø)
src/inputs/index.ts	100.00% <100.00%> (ø)
src/tasks/main.ts	82.69% <100.00%> (-0.17%)	⬇️

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