I always wanted to use Kratos for my own open-source projects, but I never got far enough into the researching how support for adding different storage options

I always wanted to use Kratos for my own open-source projects, but I never got far enough into the researching how support for adding different storage options is. My project supports multiple storage back-ends (mostly around document storage) and I would like to get Kratos to query the same ones, even if it requires dev work on my side to add support.