Adds 3.0.0-alpha1 release notes

[DarshitChanpura]

Check List

- [ ] New functionality includes testing
- [ ] New functionality has been documented

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.46%. Comparing base (7de969c) to head (5b6e3a7).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2195   +/-   ##
=======================================
  Coverage   71.46%   71.46%           
=======================================
  Files          97       97           
  Lines        2649     2649           
  Branches      411      403    -8     
=======================================
  Hits         1893     1893           
  Misses        641      641           
  Partials      115      115           

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