Evaluate to add Webpacker support

[blocknotes]

We could add an option to the installer to copy the assets using the webpacker structure.

[blocknotes]

This could be painful 😑 because we depend on external gems (Spree JS object) and we also have a .erb.js file (utils.js.erb).

[blocknotes]

@ChristianRimondi / @kennyadsl: what do you think about this one?
If we go on considering the installation procedure that copy the files on the target project as the primary way we could just close this one (and optionally evaluate it if it becomes a real issue/request).

[kennyadsl]

I'd keep it open and try to make an attempt to remove that js.erb file doing something that is also compatible with Webpacker, but after we have a clean installation process first.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It might be closed if no further activity occurs. Thank you for your contributions.