[enhancement] Add support for configurable ServiceAccount and RBAC resources in Helm chart

[eljohnson92]

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Special notes for your reviewer:

TODOs:

• squashed commits
• includes documentation
• adds unit tests
• adds or updates e2e tests

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.79%. Comparing base (f664147) to head (77cf1d2).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #294   +/-   ##
=======================================
  Coverage   62.79%   62.79%           
=======================================
  Files          15       15           
  Lines         817      817           
=======================================
  Hits          513      513           
  Misses        248      248           
  Partials       56       56           

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