feat: Flag Evaluation Requirement 1.1.4 and 1.1.5 and Provider Requirement 2.1.1

[maxveldink]

This PR

• Adds pending requirement for Flag Evaluation 1.1.4 (will defer working on Hooks until we have Flag Evaluation, Provider and Evaluation Context implemented)
• Adds tests for Flag Evaluation 1.1.5 and fixes a few configuration related issues that this uncovered
• Adds tests for Provider Requirement 2.1.1 (already supported)

Follow-up Tasks

Will continue working on bringing other requirements over

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.40%. Comparing base (3fe0123) to head (a6440c1).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #112   +/-   ##
=======================================
  Coverage   99.40%   99.40%           
=======================================
  Files          12       12           
  Lines         167      168    +1     
=======================================
+ Hits          166      167    +1     
  Misses          1        1           

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