Roles refactor: New public API with reworked project roles

[varmar05]

Added new public /v2 endpoints for project members CRUD and new endpoint for registration of users.
Also small refactoring was done (e.g. moving workspace role definition from EE).

[coveralls]

Pull Request Test Coverage Report for Build 12238117740

Details

• 231 of 236 (97.88%) changed or added relevant lines in 15 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.1%) to 94.071%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
server/mergin/sync/public_api_v2_controller.py	54	56	96.43%
server/mergin/sync/interfaces.py	17	20	85.0%

Totals
Change from base Build 12007064691:	0.1%
Covered Lines:	6584
Relevant Lines:	6999

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💛 - Coveralls

[MarcelGeo]

Looks good. Just minor suggestions and one question:

• do we want to use ProjectPermissions.Upload and other methods from project permissions class? I think we could rewrite it or remove.

[varmar05]

• do we want to use ProjectPermissions.Upload and other methods from project permissions class? I think we could rewrite it or remove.

I did not touch this one, as it is widely used. If we want further refactoring then I'd probably vote for removing it completely.

So far it is hanging there if we one day decide to introduce permissions besides roles.

[harminius]

Just curious why we split that project access PUT.