Merge branch 'peterhegman-resource_access_token_ff_definition' into 'master'

Add details for resource_access_token FF

See merge request gitlab-org/gitlab!43216

config/feature_flags/development/resource_access_token.yml

 ---
 name: resource_access_token
-introduced_by_url: 
-rollout_issue_url: 
-group: 
+introduced_by_url: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/29622
+rollout_issue_url: https://gitlab.com/gitlab-org/gitlab/-/issues/235765
+group: group::access
 type: development
 default_enabled: true