[FEATURE] Graduate Agent Config out of Experimental

[Unshure]

Problem Statement

I would like to move Agent Config out of experimental. This includes addressing a few open issues:

• Create MCP serializable config: [FEATURE] Support for multiple MCP servers (and loading from config file) #482
• Pass in other agent init parameters from config

Proposed Solution

No response

Use Case

Create a configuration for an agent that can be loaded from a file

Alternatives Solutions

No response

Additional Context

We would like to update our Devtools strands github agents to use this feature as a poc before graduating this out of experimental