Add SSE support to all reference servers

[djwessel]

Is your feature request related to a problem? Please describe.
When I first started working with the reference servers, I was frustrated that most of the servers only supported stdio transport. If the reference servers are intended to also act as a reference for people looking to implement their own custom servers, having examples of how to change the transport, especially in the typescript-based servers, would be beneficial.

Describe the solution you'd like
All reference servers have a way to run them with both stdio and sse transport. For the typescript servers, the everything implementation could be used as reference.