[Playground] HMR support possible?

[Innei]

Now no matter where to modify the code will make the page reload, lost page state, development experience is not good. Does playground moving to React make HMR support possible?

[lawvs]

In fact, the playground has HMR, but it has a limited effect.

See #621

[lawvs]

You can use the share URL button to keep the page state.

Screen.Recording.2023-02-07.at.2.50.00.PM.mov

[Innei]

I see, but it only work on '../blocks/src/**/*', and if modify other code, it always reload page. By the way, playground dev:hmr mode is not default in dev script in root workspace.

Can modify root dev script to start playground dev:hmr?