ft(cyclops-ctrl): cerbos integration for RBAC

[siddhantprateek]

closes #48

📑 Description

• Integrated Cerbos for authorization.
• Added a login controller and handler for username and password based login:
  • Returns a JWT access token, which the auth middleware uses to verify each endpoint.
• Created Cerbos policies for each resource.
• Added a Cerbos service to Docker Compose for local development.
• For user and password verification it uses kubernetes secrets

currently the way of creating a user is

apiVersion: v1
kind: Secret
metadata:
  name: cyclops-user-1
  namespace: cyclops
  labels:
    app.kubernetes.io/part-of: cyclops
    app.kubernetes.io/type: user
    app.kubernetes.io/name: siddhant
data:
  password: c2lkZGhhbnQ=
  roles: dXNlcg==
  username: c2lkZGhhbnQ=
type: Opaque

the query will be based on the labels

  labels:
    app.kubernetes.io/part-of: cyclops
    app.kubernetes.io/type: user
    app.kubernetes.io/name: siddhant

• app.kubernetes.io/name: siddhant same as the username

Further required enhancement

• need to refer sample k8s cerbos setup https://github.com/cerbos/demo-rest/blob/main/deploy/k8s.yaml and add this to part of cyclops installation

✅ Checks

• I have updated the documentation as required
• I have performed a self-review of my code

ℹ Additional context

[siddhantprateek]

closing this PR, created from wrong base branch