Allow defining multiple MCP servers in a single application, with parametrized paths

[handicraftsman]

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Expected Behavior

Developers should be able to register multiple MCP servers on non-default paths, and these paths could be parametrized in a way similar to how it's done in normal controllers with @PathVariable, or something similar in functionality.

Current Behavior

Only a single MCP server can be hosted in the app, and its path cannot be parametrized.

Context

There are tools, such as https://zapier.com/ , which seemingly allow creating customized MCP servers, with only some of their integrations available as tools.

This is also similar to how https://atlassian.com/rovo allows creating multiple agents (that is more A2A specific though) with limited sets of tools.