When I'm testing stuff out I like to do it in a clean project. The SDK has several starter projects, but you have to edit a bunch of stuff to get it working, so I just put it all in a Swift program and use that to create new, empty projects.
Right now it only works on macOS. If you're interested, it's on GitHub at GitHub - FareekDev/newpdproj: Create a new Playdate project for LUA or C.
If you have any comments or questions, please let me know.