Add a friendlier way to update a project configuration

[GregMefford]

Currently, if you are hosting a devbox project configuration template on GitHub, for example, you'd need to pull in new changes like this:

devbox stop -p my_project
rm -rf ~/.config/devbox/my_project
devbox new my_project --git [email protected]:my_project/devbox-config
devbox start -p my_project

It would be nice if the project remembered where it came from and could pull updates from GitHub, or at least had a simpler/more intuitive series of commands to run when you want to replace the project config with an updated one.

[scrogson]

Agreed! Thanks for creating this issue.