Add release instruction to readme

[jalving]

Legal Acknowledgement
By contributing to this software project, I agree my contributions are submitted under the BSD license.
I represent I am authorized to make the contributions and grant the license.
If my employer has rights to intellectual property that includes these contributions,
I represent that I have received permission to make contributions and grant the required license on behalf of that employer.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.31%. Comparing base (74d85c0) to head (fb6bc3d).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #169   +/-   ##
=======================================
  Coverage   90.31%   90.31%           
=======================================
  Files          32       32           
  Lines        2034     2034           
  Branches      319      319           
=======================================
  Hits         1837     1837           
  Misses        124      124           
  Partials       73       73           

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[bammari]

Thanks @jalving. This makes it clear long term!