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.

hosts/laptop/secrets/default.nix

@@ -0,0 +1,61 @@
+# Those are my secrets, encrypted with sops
+# You shouldn't import this file, unless you edit it
+{
+  inputs,
+  pkgs,
+  config,
+  ...
+}: let
+  home = config.home.homeDirectory;
+in {
+  imports = [inputs.sops-nix.homeManagerModules.sops];
+
+  sops = {
+    age.keyFile = "${home}/.config/sops/age/keys.txt";
+    defaultSopsFile = ./secrets.yaml;
+    secrets = {
+      ssh-config = {
+        path = "${home}/.ssh/config";
+      };
+      github-key = {
+        path = "${home}/.ssh/github";
+      };
+      jack-key = {
+        path = "${home}/.ssh/jack";
+      };
+      signing-key = {
+        path = "${home}/.ssh/key";
+      };
+      signing-pub-key = {
+        path = "${home}/.ssh/key.pub";
+      };
+    };
+  };
+
+  home.file.".config/nixos/.sops.yaml".text = ''
+    keys:
+      - &primary age12yvtj49pfh3fqzqflscm0ek4yzrjhr6cqhn7x89gdxnlykq0xudq5c7334
+      - &work age1c8pawdsxptfslgrz2c56s39mrtnjzc5mm3hfzgr2wdwu2v6vfsdsupjsq6
+    creation_rules:
+      - path_regex: hosts/laptop/secrets/secrets.yaml$
+        key_groups:
+          - age:
+            - *primary
+      - path_regex: hosts/server/secrets/secrets.yaml$
+        key_groups:
+          - age:
+            - *primary
+      - path_regex: hosts/work/secrets/secrets.yaml$
+        key_groups:
+          - age:
+            - *work
+  '';
+
+  systemd.user.services.mbsync.Unit.After = ["sops-nix.service"];
+  home.packages = with pkgs; [
+    sops
+    age
+  ];
+
+  wayland.windowManager.hyprland.settings.exec-once = ["systemctl --user start sops-nix"];
+}