feat: added standard deviation columns to results table

[jatinder14]

Features: #771

Overview

This commit introduces new columns to the results table to display the standard deviations for both the base and new datasets. These additions enhance the table's ability to provide statistical insights for performance comparisons.

Changes Made

• ResultsTable.tsx:
  • Added new columns for Base Standard Deviation (basestandarddeviation) and New Standard Deviation (newstandarddeviation). Light Mode -

Dark Mode -

• Updated the grid configuration to accommodate the new columns.

• RevisionRow.tsx:

  • Implemented styles for the new standard deviation values to maintain a consistent look with existing values.
  • Added logic to determine the comparison sign between base and new standard deviations.

• SubtestsRevisionRow.tsx:

  • Extended functionality to include standard deviation comparisons for subtest results.

Impact

• The results table will now display both median values and their corresponding standard deviations, allowing for a better understanding of variability in performance results.

Testing

• Manual testing was performed to ensure the new columns display correctly and integrate seamlessly with existing functionalities.

closes #771

[netlify[bot]]

✅ Deploy Preview for mozilla-perfcompare ready!

Name	Link
🔨 Latest commit	d087ec95b2f94783c613e6b24d268edc89c01c1a
🔍 Latest deploy log	https://app.netlify.com/sites/mozilla-perfcompare/deploys/670e1acb3c5510000881547b
😎 Deploy Preview	https://deploy-preview-779--mozilla-perfcompare.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 91.49%. Comparing base (3a555e3) to head (d087ec9).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #779 +/- ## ========================================== + Coverage 91.46% 91.49% +0.02% ========================================== Files 88 88 Lines 2332 2340 +8 Branches 434 436 +2 ========================================== + Hits 2133 2141 +8 Misses 176 176 Partials 23 23 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[jatinder14]

@syedbarimanjan @Carla-Moz Thanks for the feedback I fixed the test cases and added the required changes.