add an initial sambah_readme.md to the docs

[danielfromearth]

GitHub Issue: #194

Description

A short description of the changes in this PR.

Local test steps

Summarize testing and verification you've done. This includes unit tests or testing with specific data

Overview of integration done

Explain how this change was integration tested. Provide screenshots or logs if appropriate. An example of this would be a local Harmony deployment.

PR Acceptance Checklist

• Unit tests added/updated and passing.
• Integration testing
• CHANGELOG.md updated
• Documentation updated (if needed).

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📚 Documentation preview 📚: https://stitchee--195.org.readthedocs.build/en/195/

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 22.11%. Comparing base (722ae80) to head (9241c46).

Additional details and impacted files

@@             Coverage Diff              @@
##           develop     #195       +/-   ##
============================================
- Coverage    49.84%   22.11%   -27.73%     
============================================
  Files           11       11               
  Lines          642      642               
============================================
- Hits           320      142      -178     
- Misses         322      500      +178     

Flag	Coverage Δ
integration	?
unittests	22.11% <ø> (ø)

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