Added sddm theme, changed system font to JetBrainsMono, slightly reduced terminal font size

modules/sys/environment/sddm.nix

@@ -4,9 +4,19 @@
   config,
   ...
 }: {
+  environment.systemPackages = [(
+    pkgs.catppuccin-sddm.override {
+      flavor = "mocha";
+      font = "JetBrains Mono Nerd Font";
+      fontSize = "14";
+      loginBackground = true;
+      background = "${self}/assets/wallpapers/dark-waves.jpg";
+    }
+  )];
   services.displayManager.sddm = {
     enable = true;
     wayland.enable = true;
+    theme = "catppuccin-mocha";
     package = pkgs.kdePackages.sddm;
   };
 }