add controller to snippetsFilter status

[salonichf5]

Proposed changes

Write a clear and concise description that helps reviewers understand the purpose and impact of your changes. Use the following format:

Problem: Users want to ensure controller name is added when condition is added to SnippetsFilter.

Solution: Modify the SnippetsFilterStatus to include controller name writing status.

Testing: Unit tests

Manual Testing with two installations of NGF using different controllers

k describe snippetsfilters.gateway.nginx.org access-control
Name:         access-control
Namespace:    default
Labels:       <none>
Annotations:  <none>
API Version:  gateway.nginx.org/v1alpha1
Kind:         SnippetsFilter
Metadata:
  Creation Timestamp:  2024-09-18T16:05:05Z
  Generation:          2
  Resource Version:    599427
  UID:                 0da2968d-396e-4677-bf5f-b17be5ca4e12
Spec:
  Snippets:
    Context:  http
    Value:    limit_req_zone $binary_remote_addr zone=myzone:10m rate=1r/s;
    Context:  http.server.location
    Value:    limit_req zone=myzone burst=3;
Status:
  Controllers:
    Conditions:
      Last Transition Time:  2024-09-18T20:42:58Z
      Message:               SnippetsFilter is accepted
      Observed Generation:   2
      Reason:                Accepted
      Status:                True
      Type:                  Accepted
    Controller Name:         gateway.nginx.org/nginx-gateway-controller
    Conditions:
      Last Transition Time:  2024-09-18T20:43:20Z
      Message:               SnippetsFilter is accepted
      Observed Generation:   2
      Reason:                Accepted
      Status:                True
      Type:                  Accepted
    Controller Name:         gateway.nginx.org/nginx-gateway-controller-2
Events:                      <none>
sa.choudhary@N9939CQ4P0 ~ %

Please focus on (optional): If you any specific areas where you would like reviewers to focus their attention or provide specific feedback, add them here.

Closes #2542

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• [x] I have read the CONTRIBUTING doc
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have checked that all unit tests pass after adding my changes
• [x] I have updated necessary documentation
• [x] I have rebased my branch onto main
• [x] I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

Release notes

If this PR introduces a change that affects users and needs to be mentioned in the release notes, please add a brief note that summarizes the change.

[kate-osborn]

@salonichf5 did you manually test this?

[salonichf5]

@salonichf5 did you manually test this?

working on it :)

[bjee19]

LGTM!

Just make sure to follow Kate's comment and add the issue number to the PR.