You could use the Adobe DNG Converter to convert the RAW files to DNG files, before you import them to Photos. You will still have the advantage of RAW processing, but a more compatible format.
But keep the original RAW files, just in case Apple will release RAW support for your great camera.
Not every Panasonic model will get RAW support from Apple. I love Panasonic cameras, but I have learned to wait, until the RAW support is out, before I buy a new camera, so I do not need to convert the RAW files to DNG.
It is has been now 11 month, since your camera model has been released. The camera should be supported by now, if Apple will support it at all.