Add warning and send events if key and certificate used for route TLS configuration

[anandrkskd]

What type of PR is this?

/kind chore
What does this PR do / why we need it:
This PR sends event if insecure fields key and certificates are used for route TLS configuration also adds warning in logs for the same.

Have you updated the necessary documentation?

• Documentation update is required by this PR.
• Documentation has been updated.

Which issue(s) this PR fixes:

Fixes GITOPS-5517

How to test changes / Special notes to the reviewer:

• run make install run on an OpenShift cluster
• apply the below

apiVersion: argoproj.io/v1beta1
kind: ArgoCD
metadata:
  name: example-argocd
  labels:
    example: repo
spec:
  server:
    route: 
      enabled: true
      tls: 
        certificate: "Y2VydGlmY2F0ZQ=="
        key: "cHJpdmF0ZS1rZXk="
        insecureEdgeTerminationPolicy: Redirect
        termination: reencrypt

• check for event created and logs

[svghadi]

LGTM. Just a few nits.

[svghadi]

LGTM. Thanks @anandrkskd.