support running files from the command line via Vitale server

[jaked]

sometimes it's nice to run things from the command line without setting up a build process

see the example code in https://github.com/vitest-dev/vitest/blob/main/packages/vite-node/README.md

[jaked]

ideally this would contact a running Vitale server and pipe stdout / stderr back to the calling process. See also #26 which contemplates piping this output back to the notebook.