refactor: split server modules into smaller more manageable files

modules/nixos-modules/server/jellyfin/default.nix

@@ -0,0 +1,48 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}: let
+  jellyfinPort = 8096;
+  dlanPort = 1900;
+in {
+  imports = [
+    ./proxy.nix
+    ./fail2ban.nix
+    ./impermanence.nix
+  ];
+
+  options.services.jellyfin = {
+    subdomain = lib.mkOption {
+      type = lib.types.str;
+      description = "subdomain of base domain that jellyfin will be hosted at";
+      default = "jellyfin";
+    };
+    extraSubdomains = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      description = "ex subdomain of base domain that jellyfin will be hosted at";
+      default = [];
+    };
+    media_directory = lib.mkOption {
+      type = lib.types.str;
+      description = "directory jellyfin media will be hosted at";
+      default = "/srv/jellyfin/media";
+    };
+  };
+
+  config = lib.mkIf config.services.jellyfin.enable {
+    environment.systemPackages = [
+      pkgs.jellyfin
+      pkgs.jellyfin-web
+      pkgs.jellyfin-ffmpeg
+    ];
+
+    networking.firewall.allowedTCPPorts = [jellyfinPort dlanPort];
+
+    systemd.tmpfiles.rules = [
+      "d ${config.services.jellyfin.media_directory} 2770 jellyfin jellyfin_media"
+      "A ${config.services.jellyfin.media_directory} -    -        -               - u:jellyfin:rwX,g:jellyfin_media:rwX,o::-"
+    ];
+  };
+}