Feature: add ldap support

[nitschSB]

I added an ldap user service that connects to the an ldap server.

For every ldap user that logs in the first time, a vrt user is created with editor role.

Visual-Regression-Tracker/#324

[nitschSB]

Hi, now it's working as expected for me.
Cheers

[pashidlos]

@nitschSB thanks for contirubtion!
I'll try to review it ASAP, currently have electricity for 4h a day )
could you meanwhile share some setup for local ldap server or how you tested it?

[nitschSB]

I added some local test setup. have a look at the README.md

I'm not familiar with the frameworks you use. I got this done with the help of copilot and try&error. I think some automated tests would be nice, but my attempts were not successful - sorry for the bad test coverage.

[nitschSB]

Hi @pashidlos , do you have any questions about this? Is there anything you want me to do before merging?

[nitschSB]

Hi @pashidlos ,

I did my best to adopt the factory pattern, like you did for storage.

I also added a e2e with ldap test to the .github/workflow.yml pipeline.

Looking forward to see a merge soon ;)

Cheers
Mario