fix: Move organisation tests to proper location

[zachaysan]

Thanks for submitting a PR! Please check the boxes below:

• I have run pre-commit to check linting
• I have filled in the "Changes" section below?
• I have filled in the "How did you test this code" section below?
• I have used a Conventional Commit title for this Pull Request

Changes

Move all of the organisations code over to the the test suite, merging with existing files where existing.

How did you test this code?

Ran the test suite locally to make sure that any conftests or other issues didn't clobber the tests.

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 27, 2023 2:11pm
flagsmith-frontend-preview	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 27, 2023 2:11pm
flagsmith-frontend-staging	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 27, 2023 2:11pm

[github-actions]

Uffizzi Preview deployment-41516 was deleted.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e5058ae) 95.73% compared to head (f57becd) 95.73%.
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3041      +/-   ##
==========================================
- Coverage   95.73%   95.73%   -0.01%     
==========================================
  Files        1046     1044       -2     
  Lines       30859    30855       -4     
==========================================
- Hits        29544    29540       -4     
  Misses       1315     1315              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[novakzaballa]

LGTM