Introduce AutoMetabuilder core components and workflow packages:

- Implement core components: CLI argument parsing, environment loading, GitHub service creation, and logging configuration.
- Add support for OpenAI client setup and model resolution.
- Develop SDLC context loader from GitHub and repository files.
- Implement workflow context and engine builders.
- Introduce major workflow packages: `game_tick_loop` and `contextual_iterative_loop`.
- Update localization files with new package descriptions and labels.
- Streamline web navigation by loading items from a dedicated JSON file.

frontend/next.config.ts

@@ -1,8 +1,10 @@
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
-  /* config options here */
   reactCompiler: true,
+  experimental: {
+    appDir: "autometabuilder/app",
+  },
 };
 
 export default nextConfig;