No option to add agent description in runtime

## Description

There is no option to set an agent description in the runtime configuration. Users should be able to provide a description for their agent.

## Steps to Reproduce

1. Create or configure an agent runtime
2. Look for an option to add an agent description

## Expected Behavior

The CLI or configuration should allow users to specify an agent description for the runtime.

## Actual Behavior

No such option exists.

## CLI Version

_N/A_

## Operating System

macOS