Update Audit Events

[tobihagemann]

At first, my goal was to update the CreateVaultEvent with name/description and add a new UpdateVaultEvent.

But during testing, I felt that the audit log still felt incomplete. That's why I also added GrantVaultAccessEvent, RegisterDeviceEvent, and RemoveDeviceEvent.

[tobihagemann]

Now I'm wondering about UpdateVaultMembershipEvent (with its operation column for ADD and REMOVE) vs. RegisterDeviceEvent + RemoveDeviceEvent.

Should we split up UpdateVaultMembershipEvent as well? E.g., to AddVaultMembershipEvent and RemoveVaultMembershipEvent?

[tobihagemann]

@infeo I've split up UpdateVaultMembership into their own add and remove events after discussing this with @overheadhunter.