add ffmpeg, obs and mpv

modules/graphical/shared.nix

@@ -40,8 +40,6 @@ in
   # List packages installed in system profile. To search, run:
   # $ nix search wget
   environment.systemPackages = with pkgs; [
-  #  vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
-  #  wget
     wget
     nixos-option
     kate
@@ -77,6 +75,9 @@ in
     glxinfo
     vulkan-tools
     anki
+    obs-studio
+    mpv
+    ffmpeg
   ];
 
   #environment.sessionVariables = {