Add release and release drafter workflows

[SarthakJariwala]

Closes #20

Add release workflow to build and publish new packages directly from github actions.

Add release drafter workflow to auto-draft release notes from merged PRs

[codecov-commenter]

Codecov Report

Merging #22 (3d5d9b5) into main (20d7194) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #22   +/-   ##
=======================================
  Coverage   91.66%   91.66%           
=======================================
  Files          14       14           
  Lines         396      396           
=======================================
  Hits          363      363           
  Misses         33       33           

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