feat: add limits and totals to API responses

[matthewelwell]

Changes

Add feature, segment and segment override limits to API responses.

How did you test this code?

Tests written by Novak as part of #2526.

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Name	Status	Preview	Comments	Updated (UTC)
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[github-actions]

Uffizzi Preview deployment-33056 was deleted.

[codecov-commenter]

Codecov Report

Patch coverage: 97.56% and no project coverage change.

Comparison is base (cb42f9d) 95.43% compared to head (4b56b22) 95.44%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2615   +/-   ##
=======================================
  Coverage   95.43%   95.44%           
=======================================
  Files         975      976    +1     
  Lines       27245    27309   +64     
=======================================
+ Hits        26002    26064   +62     
- Misses       1243     1245    +2     

Files Changed	Coverage Δ
api/environments/views.py	89.43% <71.42%> (-1.17%)	⬇️
api/audit/serializers.py	100.00% <100.00%> (ø)
api/environments/serializers.py	97.14% <100.00%> (+0.21%)	⬆️
api/organisations/views.py	91.16% <100.00%> (ø)
api/projects/serializers.py	100.00% <100.00%> (ø)
api/projects/tests/test_serializers.py	100.00% <100.00%> (ø)
api/projects/views.py	94.21% <100.00%> (+0.19%)	⬆️
...pi/tests/unit/projects/test_unit_projects_views.py	100.00% <100.00%> (ø)

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[novakzaballa]

Approved