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/programs/shell/starship.nix

@@ -0,0 +1,60 @@
+# starship is a minimal, fast, and extremely customizable prompt for any shell!
+{
+  config,
+  lib,
+  ...
+}: let
+  accent = "#${config.lib.stylix.colors.base0D}";
+  background-alt = "#${config.lib.stylix.colors.base01}";
+in {
+  programs.starship = {
+    enable = true;
+    settings = {
+      add_newline = true;
+      format = lib.concatStrings [
+        "$nix_shell"
+        "$hostname"
+        "$directory"
+        "$git_branch"
+        "$git_state"
+        "$git_status"
+        "$character"
+      ];
+      directory = {
+        style = accent;
+      };
+
+      character = {
+        success_symbol = "[❯](${accent})";
+        error_symbol = "[❯](red)";
+        vimcmd_symbol = "[❮](cyan)";
+      };
+
+      nix_shell = {
+        format = "[$symbol]($style) ";
+        symbol = "🐚";
+        style = "";
+      };
+
+      git_branch = {
+        symbol = "[](${background-alt}) ";
+        style = "fg:${accent} bg:${background-alt}";
+        format = "on [$symbol$branch]($style)[](${background-alt}) ";
+      };
+
+      git_status = {
+        format = "[[(*$conflicted$untracked$modified$staged$renamed$deleted)](218)($ahead_behind$stashed)]($style)";
+        style = "cyan";
+        conflicted = "";
+        renamed = "";
+        deleted = "";
+        stashed = "≡";
+      };
+
+      git_state = {
+        format = "([$state( $progress_current/$progress_total)]($style)) ";
+        style = "bright-black";
+      };
+    };
+  };
+}