Open sourcing the Liveblocks sync engine and dev server

Hey all, we've just open sourced our sync engine and dev server, and we're very excited to share this. We're planning on open sourcing more of our platform as time goes on, and this is the first stage.

You can start your dev server in your Liveblocks app with the following command:

$ npx liveblocks dev

The team and I will be keeping an eye out for any questions you have!