Describe the feature or problem you’d like to solve

I commonly use both github.com and a GHEC (github.ghe.com). While I can configure github-mcp-server to talk to the latter (by setting $GHE_HOST and using a different PAT), then I'm not talking to github.com, and switching config back and forth feels like it'd be burdensome.

It's not clear to me which of these would be a better solution:

• installing the same MCP server twice with different configs (once per --gh-host), and somehow putting the tools under a different namespace ("How many PRs are open on foo/bar? Use #list_pull_requests from the github.ghe.com MCP")
• modifying github-mcp-server to allow for multiple (github) server configs ("How many PRs are open on github.ghe.com/foo/bar? Use #list_pull_requests")