Unify and update empty state for Admin / User / Details (groups and projects/SSH keys/Identities screen

Problem

Empty state for these 3 sections are all different.

Groups and projects	SSH Keys	Identities
Populated:	Populated:	Populated:
	Pending

Proposal

Unify the empty state appearance.

• See documentation

Figma work files

• Unify and update empty state for various Admin screens
• Expose SCIM identity in Admin GUI

Updated groups and projects	Updated SSH keys	Updated identities