feat(app_analytics): Add cache for feature evaluation

[gagantrivedi]

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Changes

Create and use cache to batch feature evaluation calls to reduce load on task processor

How did you test this code?

Added unit test

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3 Skipped Deployments

Name	Status	Preview	Comments	Updated (UTC)
docs	⬜️ Ignored (Inspect)	Visit Preview		Aug 7, 2024 2:23pm
flagsmith-frontend-preview	⬜️ Ignored (Inspect)	Visit Preview		Aug 7, 2024 2:23pm
flagsmith-frontend-staging	⬜️ Ignored (Inspect)	Visit Preview		Aug 7, 2024 2:23pm

[github-actions]

Docker builds report

Image	Build Status	Security report
ghcr.io/flagsmith/flagsmith-e2e:pr-4418	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-api-test:pr-4418	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-frontend:pr-4418	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-api:pr-4418	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith:pr-4418	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-private-cloud:pr-4418	Finished ✅	Results ✅

[github-actions]

Uffizzi Preview deployment-54779 was deleted.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.89%. Comparing base (3f745c5) to head (cd7150f).
Report is 35 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4418      +/-   ##
==========================================
+ Coverage   96.83%   96.89%   +0.06%     
==========================================
  Files        1165     1172       +7     
  Lines       38621    39082     +461     
==========================================
+ Hits        37398    37868     +470     
+ Misses       1223     1214       -9     

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[khvn26]

Two questions and two nitpicks. Otherwise, looks good.