[ENH] - Parse and load keycloak roles into conda-store

[aktech]

Feature description

After the issue #2308 is implemented, we will have access to groups and roles from keycloak in JupyterHub. Next we need to parse the role attributes and load them into Conda-Store, so that they are in affect.

Consider the following keycloak role:

Role: write-access-conda-pycon-namespace-role

Key	Value
resource	conda-store
scopes	write:conda-store!namespace=pycon

The scopes should be parsed and the equivalent should be added into conda-store such that when this role is attached to a user or group, they should have write access to pycon (for instance) namespace.

This feature is part implementation of RFD: nebari-dev/governance#47

Value and/or benefit

This will allow us to do fine-grained permissions on Conda-Store, which can be controlled from keycloak.

Anything else?

No response

[viniciusdc]

@aktech just to double check, now that the parent issue is solved, this can be worked on right?

[aktech]

Yes, correct. It is ready to be worked on.