feat: Include multi-agent session management to current

[JackYPCOnline]

Description

Enhanced the session management documentation to include comprehensive support for multi-agent systems (GraphBuilder/Swarm), extending beyond single-agent capabilities.

Related RP:
#305

Follow up PR: Swam/Graph docs update.

Type of Change

• New content addition
• Content update/revision
• Structure/organization improvement
• Typo/formatting fix
• Bug fix
• Other (please describe):

Motivation and Context

Areas Affected

Screenshots

Checklist

• [ x] I have read the CONTRIBUTING document
• [ x] My changes follow the project's documentation style
• [ x] I have tested the documentation locally using mkdocs serve
• [ x] Links in the documentation are valid and working
• [ x] Images/diagrams are properly sized and formatted
• [ x] All new and existing tests pass

Additional Notes

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[JackYPCOnline]

TODO: Follow up single agent/ Multiagent system session management intergration