refactor: split server modules into smaller more manageable files

modules/nixos-modules/server/home-assistant/fail2ban.nix

@@ -0,0 +1,39 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+lib.mkIf (config.services.fail2ban.enable && config.services.home-assistant.enable) {
+  environment.etc = {
+    "fail2ban/filter.d/hass.local".text = (
+      pkgs.lib.mkDefault (pkgs.lib.mkAfter ''
+        [INCLUDES]
+        before = common.conf
+
+        [Definition]
+        failregex = ^%(__prefix_line)s.*Login attempt or request with invalid authentication from <HOST>.*$
+
+        ignoreregex =
+
+        [Init]
+        datepattern = ^%%Y-%%m-%%d %%H:%%M:%%S
+      '')
+    );
+  };
+
+  services.fail2ban = {
+    jails = {
+      home-assistant-iptables.settings = {
+        enabled = true;
+        filter = "hass";
+        action = ''iptables-multiport[name=HTTP, port="http,https"]'';
+        logpath = "${config.services.home-assistant.configDir}/*.log";
+        backend = "auto";
+        findtime = 600;
+        bantime = 600;
+        maxretry = 5;
+      };
+    };
+  };
+}