feat: add endpoint to delete agent

[goetzrobin]

Is your feature request related to a problem? Please describe.
A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]

Currently, the REST API does not expose an endpoint to delete an agent

Describe the solution you'd like
A clear and concise description of what you want to happen.

Implement the DELETE endpoint for /agents/{agentId} that deletes an agent

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.

[4shub]

I think you are looking for this:
https://github.com/cpacker/MemGPT/blob/e3c80dee8e227db84274a76a2df47a2ce010f04c/memgpt/server/rest_api/agents/config.py#L138

[github-actions]

This issue has been automatically closed due to 60 days of inactivity.