Enable setting styles for filter pills as a configuration.

[HussamAlhennawi]

Hi,

This PR represents an implementation to enable setting the styles for filter pills (item, reset button and reset all button) as a configuration through the following functions:

• setFilterPillsItemAttributes(...)
• setFilterPillsResetFilterButtonAttributes(...)
• setFilterPillsResetAllButtonAttributes(...)

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• Have you checked to ensure there aren't other open Pull Requests for the same update/change?

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1. Does your submission pass tests and did you add any new tests needed for your feature?
2. Did you update all templates (if applicable)?
3. Did you add the relevant documentation (if applicable)?
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[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 9 lines in your changes missing coverage. Please review.

Project coverage is 91.15%. Comparing base (7f2beaa) to head (4f0c1c2).
Report is 5 commits behind head on development.

Files with missing lines	Patch %	Lines
.../Configuration/FilterPillsStylingConfiguration.php	0.00%	9 Missing ⚠️

Additional details and impacted files

@@                Coverage Diff                @@
##             development    #2178      +/-   ##
=================================================
- Coverage          91.32%   91.15%   -0.18%     
- Complexity          1999     2005       +6     
=================================================
  Files                214      216       +2     
  Lines               4509     4524      +15     
=================================================
+ Hits                4118     4124       +6     
- Misses               391      400       +9     

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[lrljoe]

I'll merge this in shortly, however I'll be making some modifications to it, as it should ideally use the centralised helper methods for managing the attributes.