Add license

[ZohebShaikh]

Add License information.
This is also used to add License label to the OCI Container

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.27%. Comparing base (f9e23b6) to head (d50ea89).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #100   +/-   ##
=======================================
  Coverage   49.27%   49.27%           
=======================================
  Files          13       13           
  Lines         621      621           
=======================================
  Hits          306      306           
  Misses        315      315           

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[tpoliaw]

Should probably include this in the Cargo.toml file as well. eg here