Add WithMcp support to RavenDb (per Database)

### Related to an existing integration?

Yes

### Existing integration

RavenDb

### Overview

I believe there is sort of a ticket on the RavenDb github about this, but it would be nice to have Aspire be able to link up the new MCP functionality of RavenDb on a per database if possible basis and automatically expose that to AIs.

### Usage example

Any chat should be able to interrogate the RavenDB instance spun up by Aspire to be able to validate data etc. This gives you a closed loop of testing because you can verify the claims of the Client.

### Breaking change?

No

### Alternatives

RavenDb REST queries or manually add the mcp to the project.

### Additional context

_No response_

### Help us help you

No, just wanted to propose this

Start by locating the existing RavenDb integration and any current WithMcp support. Determine how MCP can be exposed on a per-database basis; done means an Aspire-created RavenDB database can automatically provide that MCP connection without manual project setup.

Written by the indexing model from the issue text.