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.

server-modules/blog.nix

@@ -0,0 +1,67 @@
+{
+  config,
+  inputs,
+  lib,
+  ...
+}: let
+  inherit (import ./mk-container.nix {inherit lib config;}) mkContainer;
+  domain = config.var.domain;
+in {
+  imports = [
+    (mkContainer {
+      name = "blog";
+      hostIp = "10.233.3.1";
+      containerIp = "10.233.3.2";
+      nixosConfig = {pkgs, ...}: {
+        services.nginx = {
+          enable = true;
+          virtualHosts = {
+            "blog" = {
+              root = "${inputs.blog.packages.${pkgs.stdenv.hostPlatform.system}.default}/share/blog";
+              listen = [
+                {
+                  addr = "0.0.0.0";
+                  port = 8080;
+                }
+              ];
+              locations."/" = {
+                tryFiles = "$uri $uri/ =404";
+              };
+              extraConfig = ''
+                port_in_redirect off;
+                absolute_redirect off;
+                error_page 403 /403.html;
+                error_page 404 /404.html;
+                error_page 500 /500.html;
+                error_page 503 /503.html;
+                add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' data: https://umami.${domain}; style-src 'self' 'unsafe-inline'; img-src 'self' data: https://git.${domain}; connect-src 'self' https://umami.${domain};" always;
+                add_header X-Frame-Options "SAMEORIGIN" always;
+                add_header X-Content-Type-Options "nosniff" always;
+                add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;
+              '';
+            };
+            "www-redirect" = {
+              listen = [
+                {
+                  addr = "0.0.0.0";
+                  port = 8081;
+                }
+              ];
+              extraConfig = "return 301 https://${domain}$request_uri;";
+            };
+          };
+        };
+        networking.firewall.allowedTCPPorts = [
+          8080
+          8081
+        ];
+        system.stateVersion = "24.05";
+      };
+    })
+  ];
+
+  services.cloudflared.tunnels."${config.var.tunnelId}".ingress = {
+    "${config.var.domain}" = "http://10.233.3.2:8080";
+    "www.${config.var.domain}" = "http://10.233.3.2:8081";
+  };
+}