add pkgs.openwrt_24_10

is needed by Belkin RT3200 and might also be handy for OpenWrt One?

this is very copy-pastey, will tidy it up after it
stops being a moving target

pkgs/default.nix

@@ -100,6 +100,7 @@ in {
   odhcp-script = callPackage ./odhcp-script { };
   odhcp6c = callPackage ./odhcp6c { };
   openwrt = callPackage ./openwrt { };
+  openwrt_24_10 = callPackage ./openwrt/2410.nix { };
   output-template = callPackage ./output-template { };
   ppp = callPackage ./ppp { };
   pppoe = callPackage ./pppoe { };