Add GitOps exceptions to Change Management UI

[sgress454]

Related user story

#40171

Task

Add UI to the Settings -> Integrations -> Change Management screen allowing users to exempt software, labels and secrets from GitOps.

Condition of satisfaction

• UI should match https://www.figma.com/design/TssgYTpxJf6ZLLk4I42RCz/-40171-GitOps-mode--Manage-software--labels--and-secrets-outside-of-git?node-id=0-1
• Updating the UI should update the gitops.exceptions object in app config