add(games): added fallout4 mod suppport

NOTE: this is a very specific application. Find a way to obscure for
common user.

modules/home/apps-optional.nix

@@ -13,6 +13,8 @@
     ../../apps/ttyper
     ../../apps/libreoffice
     ../../apps/antigravity
+    # GAMESZ
+    ../../apps/mo2
   ];
   home.packages = with pkgs; [
     # TODO: migrate these to `apps` folder.

modules/home/gaming.nix

@@ -27,6 +27,8 @@
 
   # Games that should have `stayfocused` applied (to avoid multi-monitor focus issues)
   stayFocusedGames = [
+    "Fallout4"
+    "steam_app_377160"
     # "Deadlock"
     # "project8"
     # "citadel"