Describe the feature you'd like to request

It would be nice if turbo could run in "watch mode

Describe the solution you'd like

Turbo could watch all the files it uses to calculate the build hash for each package/workspace, and re-run the build if one of those files changes.

Describe alternatives you've considered

I think I could probably setup nodemon to run turbo when a file changes in a package, and then turbo will just only build packages with a changed file.