Add new server modules and configurations for various services

- Introduced `default-creds` module for managing default credentials with Umami integration.
- Added `fail2ban` module for brute-force attack protection with configurable ban times.
- Created `firewall` module to enable and configure basic firewall settings.
- Implemented `gitea` module for self-hosted Git service with PostgreSQL backend.
- Developed `glance` module for a customizable dashboard with various widgets and themes.
- Added `iknowyou` module for a self-hosted password manager with production and demo environments.
- Introduced `kernel-hardening` module for enhancing kernel security settings.
- Created `mazanoke` module for a simple web application with Nginx integration.
- Added `mealie` module for a self-hosted meal planning application.
- Implemented `stirling-pdf` module for PDF generation service.
- Developed `umami` module for self-hosted analytics with secret management.
- Added `ssh` module for secure SSH configuration with user restrictions.
- Introduced `nixy` theme for a customized aesthetic experience across services.

home/system/hyprpaper/default.nix

@@ -0,0 +1,16 @@
+# Hyprpaper is used to set the wallpaper on the system
+{lib, ...}: {
+  # The wallpaper is set by stylix
+  services.hyprpaper = {
+    enable = true;
+    settings = {
+      ipc = "on";
+      splash = false;
+    };
+  };
+  systemd.user.services.hyprpaper.Unit.After = lib.mkForce "graphical-session.target";
+
+  wayland.windowManager.hyprland.settings.exec-once = [
+    "systemctl --user enable --now hyprpaper.service"
+  ];
+}