Windows support

[Cherry]

This is awesome and great to see!

Unfortunately it doesn't currently seem to work on Windows and errors with:

'which' is not recognized as an internal or external command,
operable program or batch file.

I suspect the code that adds it to Claude will also have issues since that seems to be hard-coded to MacOS directories: https://github.com/cloudflare/mcp-server-cloudflare/blob/0c312c0bf93036249cff9c914947b105f67157f0/src/init.ts#L69

On Windows I'm using https://claude.ai/download as per https://support.anthropic.com/en/articles/10065433-installing-claude-for-desktop