feat: Add state feature filter

[zachaysan]

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Changes

Fixes #3243

Introduce the ability to filter based off of the feature's value or enabled status, but only when connected to a given environment. Note that there is a limitation at present when filtering off of features with an integer value since I was not able to find a workable icontains that is handled by that workflow in Django.

How did you test this code?

Manually tested a lot of combinations, kept two of them for the actual tests since they are lengthy tests.

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[codecov-commenter]

Codecov Report

Attention: Patch coverage is 99.09091% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 95.86%. Comparing base (8d79cb1) to head (e83b6f6).
Report is 6 commits behind head on main.

Files	Patch %	Lines
api/features/views.py	96.29%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##             main    #3541    +/-   ##
========================================
  Coverage   95.86%   95.86%            
========================================
  Files        1099     1099            
  Lines       34282    34455   +173     
========================================
+ Hits        32864    33032   +168     
- Misses       1418     1423     +5     

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[matthewelwell]

On the whole this looks 👌 but I've added a few minor comments where I think some improvements can be made.

I think there's only one actual necessary change which is related to setting the type in the query filter as well.