Custom labels and annotations to the pods of the server, repo, application set controller, and application controller

[enriqueav99]

What type of PR is this?

/kind enhancement

What does this PR do / why we need it:

Add the feature to add custom labels and annotations to the pods of the server, repo, application set controller, and application controller.

Have you updated the necessary documentation?

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

Which issue(s) this PR fixes:

Fixes #1530 #637

How to test changes / Special notes to the reviewer:
Apply the following yaml

apiVersion: argoproj.io/v1beta1
kind: ArgoCD
metadata:
  name: argocd-sample
spec:
  server:
    customPodLabels:
      custom: label
      custom2: server
    customPodAnnotations:
      custom: annotation
      custom2: server
  repo:
    customPodLabels:
      custom: label
      custom2: repo
    customPodAnnotations:
      custom: annotation
      custom2: repo
  controller:
    customPodLabels:
      custom: label
      custom2: controller
    customPodAnnotations:
      custom: annotation
      custom2: controller
  applicationSet:
    customPodLabels:
      custom: label
      custom2: applicationSet
    customPodAnnotations:
      custom: annotation
      custom2: applicationSet