Resolve "Add group actions to Audit events"

What does this MR do?

As part of the Audit events, it logs important group actions. This is recorded when something happens at the group level:

• Group created
• Change group visibility
• Add member
• Remove member
• Add project to the group
• Remove project to the group

Additional information to record

• Who did the action
• Timestamp
• IP address

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Documentation created/updated
• API support added
• Tests added for this feature/bug
• Review
  • Has been reviewed by UX
  • Has been reviewed by Frontend
  • Has been reviewed by Backend
  • Has been reviewed by Database
• Conform by the merge request performance guides
• Conform by the style guides
• Squashed related commits together

What are the relevant issue numbers?

Closes #1372 (closed)