added browser, added system level and user level packges, added flatpak input

modules/nixos/configuration.nix

@@ -69,6 +69,13 @@
     wireguard-tools
     podman
     toolbox
+    grim
+    slurp
+    playerctl
+    light
+    brightnessctl
+    wttrbar
+    cliphist
   ];
 
   # Install system-wide fonts
@@ -118,4 +125,24 @@
 
   # Add username to groups "wheel" and "video" - more may be added here later
   users.users.${userName}.extraGroups = ["wheel" "video"];
+
+  # XDG stuff
+  xdg = {
+    portal = {
+      enable = true;
+      extraPortals = with pkgs; [
+        xdg-desktop-portal-wlr
+        xdg-desktop-portal-gtk
+      ];
+    };
+  };
+
+  # Firewall stuff not allowed in common user and network creation
+  networking.firewall.enable = true; # VERY important, do not touch
+  # networking.firewall.allowedTCPPorts = [];
+  # networking.firewall.allowedUDPPorts = [];
+  networking.networkmanager.enable = true; # Linux tool for managing network connections
+
+  # Enable Flatpak (app containerization)
+  services.flatpak.enable = true;
 }