[ReplaceRegexpTask] Added failOnError support

[siad007]

ReplaceRegexpTask does not support a failOnError and just log them as a warning.

• Added failOnError attribute with default false
• Changed loglevel from warning to error

[codecov]

Codecov Report

Attention: Patch coverage is 62.50000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 53.59%. Comparing base (b2af8ce) to head (9c03df0).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/Phing/Task/System/ReplaceRegexpTask.php	62.50%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1866      +/-   ##
============================================
+ Coverage     53.57%   53.59%   +0.01%     
- Complexity     9809     9812       +3     
============================================
  Files           495      495              
  Lines         24198    24204       +6     
============================================
+ Hits          12963    12971       +8     
+ Misses        11235    11233       -2     

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