🔒 Replaced swaylock with Hyprlock

- Removed Swaylock
- Added Hyprlock with Catppuccin theme.
- Replaced commands to swaylock with hyprlock.
- Added JetBrains Mono Nerd Font

configuration.nix

@@ -44,6 +44,13 @@
     NIXOS_CONFIG_PATH = "/etc/nixos";
   };
 
+  fonts = {
+    fontconfig.enable = true;
+    packages = with pkgs; [
+      nerd-fonts.jetbrains-mono
+    ];
+  };
+
   # List packages installed in system profile. To search, run:
   # $ nix search wget
   environment.systemPackages = with pkgs; [