Using Tenant recorder to emit and record events about the reconciliation

[prometherion]

Describe the feature

As a Cluster Administrator, I'd like to check events of the last reconciliations rather than debugging the Capsule logs.

Controller Runtime provides recorder to deal with events recorder.

What would the new user story look like?

1. kubectl describe tnt <name>
2. checking the last events for a Tenant

Expected behavior

# kubectl describe tenant oil
Name:         tenant-owner                                                                                                                                                                                                                    
Namespace:                                                                                                                                                                                                                                    
Labels:       <none>                                                                                                                                                                                                                          
Annotations:  <none>                                                                                                                                                                                                                          
API Version:  capsule.clastix.io/v1alpha1                                                                                                                                                                                                     
Kind:         Tenant 
  Type    Reason     Age   From               Message
  ----    ------     ----  ----               -------
  Normal  Scheduled  19s   default-scheduler  Successfully assigned capsule-system/capsule-controller-manager-74bd94f9fc-4zcnm to capsule-control-plane
  Normal  Pulled     18s   kubelet            Container image "quay.io/clastix/capsule:v0.0.3" already present on machine
  Normal  Created    18s   kubelet            Created container manager
  Normal  Started    18s   kubelet            Started container manager
  Normal  Pulled     18s   kubelet            Container image "gcr.io/kubebuilder/kube-rbac-proxy:v0.5.0" already present on machine
  Normal  Created    18s   kubelet            Created container kube-rbac-proxy
  Normal  Started    18s   kubelet            Started container kube-rbac-proxy

YMMV, just for the sake of understanding used the Pod ones.