Add linux native nxm handler

[CcMenta]

It would be nice if we could have a nxm handler for linux mainly because it makes it much easier to use mod organizer 2
There is a work around to make the windows version work with nxm.
Here are the steps (for those who have this issue and want to use nxm with mod organizer):

1. Create a shell script and make it executable:
   WINEESYNC=1 WINEPREFIX=<path to wine prefix> <path to wine version> <path to the nxm handler>/nxmhandler.exe "$1"

For me it looks like this:
WINEESYNC=1 WINEPREFIX=/home/<user>/Games/Heroic/Prefixes/default/MO2 /home/<user>/.config/heroic/tools/wine/Wine-GE-Proton8-26/bin/wine /home/<user>/.windowsprograms/ModOrganizer2/nxmhandler.exe "$1" I used to censor my username on linux

2. Create a .desktop file in /usr/share/applications:
   [Desktop Entry] Exec=<path to shell script> %u MimeType=x-scheme-handler/nxm; Name=NXM Handler Terminal=false Type=Application

For me it looks like this:
[Desktop Entry] Exec=/home/<user>/.local/bin/tools/nxmhandler.sh %u MimeType=x-scheme-handler/nxm; Name=NXM Handler Terminal=false Type=Application

if you done these steps right nxm links should work but it's a hassle to make it work.