Added support for cachyos

Its arch anyway.

Author: BartekDeveloper

src/linux/Packaging.Linux/install-from-source.sh

@@ -220,7 +220,7 @@ case "$distribution" in
 
         ensure_dotnet_installed
     ;;
-    arch)
+    arch | cachyos)
         print_unsupported_distro "WARNING" "$distribution"
 
         # --noconfirm required when running from container