feat(frontend): stratification by subject ID

[eatyourgreens]

Add ID to the list of CSV columns that can be used to stratify data into groups.

[sonarcloud[bot]]

Quality Gate passed for 'pkpdapp'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov[bot]]

Codecov Report

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

Project coverage is 76.78%. Comparing base (28944d1) to head (ae413f0). Report is 34 commits behind head on development.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## development #481 +/- ## =============================================== - Coverage 76.88% 76.78% -0.10% =============================================== Files 108 108 Lines 5593 5609 +16 =============================================== + Hits 4300 4307 +7 - Misses 1293 1302 +9 ```

:umbrella: View full report in Codecov by Sentry.
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[sonarcloud[bot]]

Quality Gate passed for 'pkpdapp-team_pkpdapp_frontend'

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud