gql for "me" and role switching

[nl0]

Description

TODO

• [ ] Unit tests
• [ ] Automated tests (e.g. Preflight)
• [ ] Confirm that this change meets security best practices and does not violate the security model
• [ ] Documentation
  • [ ] Python: Run build.py for new docstrings
  • [ ] JavaScript: basic explanation and screenshot of new features
  • [ ] Markdown somewhere in docs/*/.md that explains the feature to end users (said .md files should be linked from SUMMARY.md so they appear on https://docs.quiltdata.com)
  • [ ] Markdown docs for developers
• [ ] Changelog entry (skip if change is not significant to end users, e.g. docs only)

[codecov[bot]]

Codecov Report

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

Project coverage is 39.58%. Comparing base (fdd7b3f) to head (91e3266). Report is 1 commits behind head on users-gql.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## users-gql #3984 +/- ## ============================================== + Coverage 20.57% 39.58% +19.00% ============================================== Files 684 28 -656 Lines 25195 2410 -22785 Branches 4637 0 -4637 ============================================== - Hits 5184 954 -4230 + Misses 19369 1456 -17913 + Partials 642 0 -642 ``` | [Flag](https://app.codecov.io/gh/quiltdata/quilt/pull/3984/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=quiltdata) | Coverage Δ | | |---|---|---| | [catalog](https://app.codecov.io/gh/quiltdata/quilt/pull/3984/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=quiltdata) | `?` | | | [lambda](https://app.codecov.io/gh/quiltdata/quilt/pull/3984/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=quiltdata) | `39.58% <ø> (-44.17%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=quiltdata#carryforward-flags-in-the-pull-request-comment) to find out more.

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