added aagl flake, implemeneted into gaming apps module

modules/apps/gaming.nix

@@ -1,11 +1,14 @@
-{
+{ 
   config,
   lib,
   pkgs,
+  aagl,
   ...
 }: let
   cfg = config.gaming;
 in {
+  imports = [ aagl.nixosModules.default ];
+
   options.gaming = {
     steam = {
       enable = lib.mkEnableOption "Steam gaming platform";
@@ -108,6 +111,16 @@ in {
     ffxiv = {
       enable = lib.mkEnableOption "Final Fantasy XIV and it's accompanied (unofficial) launcher";
     };
+
+    aagl = {
+      anime-game-launcher = {
+        enable = lib.mkEnableOption "AAGL (legacy)";
+      };
+
+      honkers-railway-launcher = {
+        enable = lib.mkEnableOption "Honkai: Star Rail launcher";
+      };
+    };
   };
 
   config = {
@@ -139,6 +152,14 @@ in {
         ];
     };
 
+    programs.anime-game-launcher = lib.mkIf cfg.aagl.anime-game-launcher.enable {
+      enable = true;
+    };
+
+    programs.honkers-railway-launcher = lib.mkIf cfg.aagl.honkers-railway-launcher.enable {
+      enable = true;
+    };
+
     environment.systemPackages =
       (lib.optionals cfg.lutris.enable (
         [cfg.lutris.package] ++
@@ -155,5 +176,13 @@ in {
       )) ++
       (lib.optionals cfg.minecraft.enable [pkgs.prismlauncher]) ++
       (lib.optionals cfg.ffxiv.enable [pkgs.xivlauncher]);
+
+    nix.settings = (lib.mkIf
+      (cfg.aagl.anime-game-launcher.enable || cfg.aagl.honkers-railway-laucher.enable)
+      {
+        substituters = [ "https://ezkea.cachix.org" ];
+        trusted-public-keys = [ "ezkea.cachix.org-1:ioBmUbJTZIKsHmWWXPe1FSFbeVe+afhfgqgTSNd34eI=" ];
+      }
+    );
   };
 }