Added support for env variables in helm chart

[stijndehaes]

Issue #, if available: None

Description of changes:

Added support for environment variables in the helm chart

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.67%. Comparing base (f9d1c34) to head (d241f65).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #504   +/-   ##
=======================================
  Coverage   59.67%   59.67%           
=======================================
  Files          11       11           
  Lines        1034     1034           
=======================================
  Hits          617      617           
  Misses        400      400           
  Partials       17       17           

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[simonmarty]

What's the use case for this?