Refactoring FirstFitAllocator class

[BryanMLima]

Description

This PR refactors the class FirstFitAllocator improving modularity and code legibility. This PR also made some changes to logs across this class.

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• build/CI

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 4.26%. Comparing base (21af134) to head (1ff8f4a).

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #9074       +/-   ##
============================================
- Coverage     15.28%   4.26%   -11.02%     
============================================
  Files          5425     363     -5062     
  Lines        474138   29565   -444573     
  Branches      58984    5190    -53794     
============================================
- Hits          72486    1262    -71224     
+ Misses       393584   28160   -365424     
+ Partials       8068     143     -7925     

Flag	Coverage Δ
uitests	4.26% <ø> (ø)
unittests	?

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.