scripts/installer.sh: allow Archcraft for Arch packages (#13870)

Fixes #13869

Signed-off-by: Erisa A <erisa@tailscale.com>

scripts/installer.sh

@@ -224,7 +224,7 @@ main() {
 				VERSION="leap/15.4"
 				PACKAGETYPE="zypper"
 				;;
-			arch|archarm|endeavouros|blendos|garuda)
+			arch|archarm|endeavouros|blendos|garuda|archcraft)
 				OS="arch"
 				VERSION="" # rolling release
 				PACKAGETYPE="pacman"