How can I add my 52Pi NVDAC to Volumio?

I have got a 52Pi NVDAC, it has PCIe to NVMe slot for my 2242 ssd drive. and it also is a HiFiBerry DAC+ standard, but I want to add this board to volumio so that other people can select the device in the device list like this figure.
image
How can i submmit the request to volumio support team? Somebody could you please help me out ?

and more information about this DAC board is here:
https://wiki.52pi.com/index.php?title=EP-0218
and it seems like the HiFiBerry DAC+ board , if I can put the name on it, it will be easy to other people who use this board .