[launchweek demo] Add Sentiment class

[rohitvinnakota-codecov]

This change adds a class to calculate Sentiment

[seer-by-sentry]

Sentry has generated a new PR with unit tests for this PR. View the new PR(#946) to review the changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.24%. Comparing base (9beb3f2) to head (fa4ca76).
Report is 4 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #945      +/-   ##
==========================================
- Coverage   96.24%   96.24%   -0.01%     
==========================================
  Files         824      826       +2     
  Lines       19008    19052      +44     
==========================================
+ Hits        18295    18336      +41     
- Misses        713      716       +3     

Flag	Coverage Δ
unit	92.50% <100.00%> (+<0.01%)	⬆️
unit-latest-uploader	92.50% <100.00%> (+<0.01%)	⬆️

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[codecov-notifications]

Codecov Report

All modified and coverable lines are covered by tests ✅

✅ All tests successful. No failed tests found.

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