load additional plugs on manager startup

[sainak]

Proposed Changes

ADDITIONAL_PLUGS were only loaded during install time, this pr fixes it by loading them in manager initl

Merge Checklist

• Tests added/fixed
• Update docs in /docs
• Linting Complete
• Any other necessary step

Only PR's with test cases included and passing lint and test pipelines will be reviewed

@ohcnetwork/care-backend-maintainers @ohcnetwork/care-backend-admins

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 65.59%. Comparing base (a7fb6ea) to head (f2d52d4).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #2537   +/-   ##
========================================
  Coverage    65.59%   65.59%           
========================================
  Files          223      223           
  Lines        13383    13383           
  Branches      1855     1855           
========================================
  Hits          8779     8779           
  Misses        4218     4218           
  Partials       386      386           

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