[Improvement]: AgentID related improvements

[menakaj]

Please select the area the issue is related to

Area/Agent Lifecycle (Agent create, configure, kinds, build, test, deploy, keys/tokens)

Please select the aspect the issue is related to

Aspect/Identity & Access (Identities, identity providers, roles, permissions, tenancy)

Suggested Improvement

1. List of roles assigned to the agent is not visible enough.

2. In the Roles page, the assigned agents are not shown.

The assignments response is empty.

3. In Agents page, Thunder AgentID should be renamed to AgentID

Related Issues

No response

[jhivandb]

2. Is fixed with Fix agent identity role assignments dropping agent assignees #1323

[menakaj]

The information on what is this and how to use this credentials is missing in external agent ui.

[menakaj]

Roles and groups listing is not prominant. can be positioned under the client id.

Also, does client id resembles agent id? I feel like, renaming them as agent Id, agent secret would be more user friendly.