libtas: add binutils and ffmpeg to PATH

libTAS invokes readelf and ffmpeg, it does not crash when they are not
present, however certain features like video encoding stop working
without any error message showing up in the GUI.

pkgs/by-name/li/libtas/package.nix

@@ -9,6 +9,7 @@
 , lua5_3
 , qt5
 , file
+, binutils
 , makeDesktopItem
 }:
 
@@ -39,7 +40,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   postFixup = ''
     wrapProgram $out/bin/libTAS \
-      --suffix PATH : ${lib.makeBinPath [ file ]} \
+      --suffix PATH : ${lib.makeBinPath [ file binutils ffmpeg ]} \
       --set-default LIBTAS_SO_PATH $out/lib/libtas.so
   '';