[Feature] Add IsNumberEvaluator

[ArtARTs36]

Added

• Added evaluator isNumber
• Added evaluator containsNumber

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[codecov-commenter]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.34% 🎉

Comparison is base (7edd54a) 63.27% compared to head (9e856d5) 63.61%.

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Additional details and impacted files

@@             Coverage Diff              @@
##             master      #66      +/-   ##
============================================
+ Coverage     63.27%   63.61%   +0.34%     
- Complexity     1603     1604       +1     
============================================
  Files           317      317              
  Lines          5135     5134       -1     
============================================
+ Hits           3249     3266      +17     
+ Misses         1886     1868      -18     

Files Changed	Coverage Δ
...lication/Rule/Rules/ChangelogHasNewReleaseRule.php	97.36% <ø> (ø)
...Rules/ChangelogHasNewReleaseRule/ReleaseParser.php	96.00% <ø> (ø)
...ion/Evaluators/Strings/ContainsNumberEvaluator.php	100.00% <100.00%> (ø)
...Condition/Evaluators/Strings/IsNumberEvaluator.php	100.00% <100.00%> (ø)
...tion/Rule/Rules/BranchStartsWithTaskNumberRule.php	100.00% <100.00%> (+20.83%)	⬆️

... and 2 files with indirect coverage changes

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