ADD: Beta status badge

[syedhamidali]

• Closes #xxxx
• Tests added
• Changes are documented in history.md

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.97%. Comparing base (a827a18) to head (69104bd).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #210      +/-   ##
==========================================
+ Coverage   91.95%   91.97%   +0.02%     
==========================================
  Files          23       23              
  Lines        4562     4574      +12     
==========================================
+ Hits         4195     4207      +12     
  Misses        367      367              

Flag	Coverage Δ
notebooktests	78.15% <30.76%> (-0.14%)	⬇️
unittests	90.24% <100.00%> (+0.02%)	⬆️

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[kmuehlbauer]

@syedhamidali As commented inline, please remove all additional code changes from the beta-badge PR, then we can merge.

Side note: On the openradar dev meeting before the ERAD, the was the conclusion to move fast to approach version 1.0.