f2e-server esbuild middleware

f2e-middle-esbuild is a plugin-middleware for the f2e-server framework that integrates esbuild for fast JavaScript/TypeScript bundling and transpilation. Version 0.11.3 is the latest stable release. It allows configuring esbuild build options via an `.esbuildrc.js` file, supports external module splitting for faster dev builds, and provides a bundle size analyzer endpoint. Compared to standalone esbuild usage, it seamlessly integrates with f2e-server's middleware pipeline, lifecycle events, and file watching. The package ships TypeScript type definitions.