feat(node): cli shortcuts add restart command

[alexzhang1030]

add restart shortcut, copied from vite

[brc-dd]

Ah, restart might not work like this. It'll restart the vite server, but won't actually rerun the vitepress part. You'll need to pass createDevServer to bindShortcuts and run await server.close(); await createDevServer() in action.

[alexzhang1030]

Thanks for reminding me, is this correct now? /cc @brc-dd