init.json files should change the parent directory to be a script

[Pyseph]

Hi!
Currently, when you have an init.json file within a folder, it simply continues being created as a ModuleScript named init when syncing -- which is a bit annoying to work around. We use json files extensively in our game as a way to let our developers in charge of balancing edit item and statistics data, without worrying about any malicious code accidentally slipping in. Letting init.json work the same way as init.luau files would be awesome for our workflow!

It is not any breaking behavior, and is something we have worked around for now, but it is at the cost of readability and navigation of the studio scripts.

[Dekkonot]

This is a breaking change, so I can't promise support for it, but I'd love to support init files for all of the Rojo supported types eventually.