feat: API Access keys

[zeddo123]

This PR adds a way to secure mlsolid's endpoint with generate API access keys.

Behaviour

When this option is enabled api_key_access, users must provide an API access key to communicate with the service.
Steps:

1. Acquire an API key from the service from specific permissions (using basic authentication or oauth2 flows) [Future]
2. Use the API key to perform actions on your mlsolid instance

Permissions

• PullRegistry -- Allows downloading models from model registries
• PushRegistry -- Allows pushing new models to model registries
• PushExperiments -- Allows creating experiments and runs as well as pushing artifacts

[github-actions]

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Build	Format	Lint	Breaking	Updated (UTC)
✅ passed	✅ passed	✅ passed	✅ passed	Nov 28, 2025, 9:25 PM