feat: Adds workflow for NixOS build

nixos/kiosk.nix

@@ -123,6 +123,16 @@ EOF
     chown kiosk:kiosk /home/kiosk/.bash_profile
   '';
 
+  # Unpack preconfigured Firefox profile from the repository into kiosk's home
+  system.activationScripts.kioskFirefoxProfile = lib.stringAfter ["users"] ''
+    mkdir -p /home/kiosk/.mozilla/firefox
+    # Only unzip if directory is empty (first activation)
+    if [ -z "$(ls -A /home/kiosk/.mozilla/firefox 2>/dev/null)" ]; then
+      ${pkgs.unzip}/bin/unzip -o ${../Firefox.zip} -d /home/kiosk/.mozilla/firefox
+      chown -R kiosk:kiosk /home/kiosk/.mozilla/firefox
+    fi
+  '';
+
   ############################################
   # Include your userscripts in the image for easy import
   ############################################
@@ -135,6 +145,7 @@ EOF
   time.timeZone = "UTC";
   services.openssh.enable = true; # optional, mirrors preseed tasksel ssh-server
 
+
   # Keep system simple, disable unneeded DM
   services.displayManager.enable = false;
 }