Add concept of user groups

[ml-evs]

This PR adds the concept of groups of users, and the corresponding API routes and UIs. The aim of groups is to be able to provide blanket permissions to subsets of users. Some statements:

• Users are created without any group.
• Currently only admins can create groups and assign users to them, though it is already possible to list users as admins for a group (and in future they will control access).

Still to-do:

• Use these in permissions lookups
• Allow users to assign samples as visible to groups on creation and edit
• Default permissions for groups

[codecov]

Codecov Report

Attention: Patch coverage is 54.50980% with 116 lines in your changes missing coverage. Please review.

Project coverage is 73.32%. Comparing base (187c364) to head (e6ac55d).
Report is 7 commits behind head on main.

Files with missing lines	Patch %	Lines
pydatalab/src/pydatalab/routes/v0_1/admin.py	33.72%	57 Missing ⚠️
pydatalab/src/pydatalab/routes/v0_1/items.py	36.61%	45 Missing ⚠️
pydatalab/src/pydatalab/mongo.py	64.70%	6 Missing ⚠️
pydatalab/src/pydatalab/permissions.py	63.63%	4 Missing ⚠️
pydatalab/src/pydatalab/routes/v0_1/groups.py	92.00%	2 Missing ⚠️
pydatalab/src/pydatalab/login.py	90.90%	1 Missing ⚠️
pydatalab/src/pydatalab/routes/v0_1/users.py	91.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1062      +/-   ##
==========================================
+ Coverage   71.73%   73.32%   +1.59%     
==========================================
  Files          66       67       +1     
  Lines        4482     4701     +219     
==========================================
+ Hits         3215     3447     +232     
+ Misses       1267     1254      -13     

Files with missing lines	Coverage Δ
pydatalab/src/pydatalab/models/people.py	93.68% <100.00%> (+1.18%)	⬆️
pydatalab/src/pydatalab/models/traits.py	98.70% <100.00%> (+0.09%)	⬆️
pydatalab/src/pydatalab/routes/v0_1/__init__.py	100.00% <100.00%> (ø)
pydatalab/src/pydatalab/login.py	84.50% <90.90%> (+0.38%)	⬆️
pydatalab/src/pydatalab/routes/v0_1/users.py	91.07% <91.66%> (-0.04%)	⬇️
pydatalab/src/pydatalab/routes/v0_1/groups.py	92.00% <92.00%> (ø)
pydatalab/src/pydatalab/permissions.py	83.92% <63.63%> (-1.49%)	⬇️
pydatalab/src/pydatalab/mongo.py	77.77% <64.70%> (-3.05%)	⬇️
pydatalab/src/pydatalab/routes/v0_1/items.py	75.06% <36.61%> (-6.70%)	⬇️
pydatalab/src/pydatalab/routes/v0_1/admin.py	45.52% <33.72%> (-23.71%)	⬇️

... and 15 files with indirect coverage changes

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[cypress]

datalab    Run #3525

Run Properties:   Passed #3525  •  ab834539be ℹ️: Merge e6ac55d8598a780110f7faa45b5c78f70d61abf0 into c51623496dfb3e4766384289dfc2...

Project	datalab
Branch Review	ml-evs/user-groups
Run status	Passed #3525
Run duration	08m 30s
Commit	ab834539be ℹ️: Merge e6ac55d8598a780110f7faa45b5c78f70d61abf0 into c51623496dfb3e4766384289dfc2...
Committer	Matthew Evans
View all properties for this run ↗︎

---

Test results
Failures	0
Flaky	0
Pending	0
Skipped	0
Passing	504
View all changes introduced in this branch ↗︎

[BenjaminCharmes]

Users can now see items if they:

1. Created the item (existing)
2. Are a member of a group the item is shared with (new)
3. Are an admin of a group the item is shared with (new)

• Users can only share items with groups they belong to or administer

I've also updated the UI:

• In the administrator panel, you can now create, update or delete groups.
• On an item page, you can share this item with the groups you belong to.