feat: add globalproxysettings

[oliverbaehler]

This PR proposes a new CRD for the capsule-proxy GlobalProxySettings. Its meant for use-cases, where we want to bind clusterScoped Listing permissions to subjects (eg. listing clusters). An example:

apiVersion: capsule.clastix.io/v1beta1
kind: GlobalProxySettings
metadata:
  name: global-proxy-settings
spec:
  rules:
  - subjects:
    - kind: User
      name: alice
    clusterResources:
    - apiGroups:
      - "*"
      resources:
      - "*"
      operations:
      - List
      selector:
        matchLabels:
          app.kubernetes.io/type: dev
  - subjects:
     - kind: User
       name: alice
    clusterResources:
     - apiGroups:
       - "*"
       resources:
       - "*"
       operations:
       - List
       selector:
         matchLabels:
           app.kubernetes.io/type: meowie

It converts all modules to GKs to GVKs. This is a preparation to make clusterResources properties compatible with tenant selected attributes (for cluster-scoped resources)

It also adds a first e2e usinbg ginkgo, im going to add more tests in seperate PRs. Creates the fundament for #257