setup-keymap is missing neo-bone keymap

hello, this is a minor issue but it’s just not a super comfy experience to start a livesystem and be unable to load the keymap i use every day (de-neo-bone) because without that i can’t type all my passwords, including my luks password that i kind of need in order to access my hard drive. the keymap is a bit niche but all the other linux livesystems have it (gentoo, arch, etc) so i hope this is not a very unreasonable request. i did try to convert the .map file to a binary file with loadkeys -b on my other system but it failed with an error that the search engines have never heard of and at that point i just have to admit i have absolutely no idea how any of this works and hope that one of you is smarter than i am