ktorio/ktor ? reverse-engineered prompt

Build me a Kotlin web framework project that lets people make fast asynchronous web apps and microservices with very little setup.

I want it to be able to start an embedded server, handle basic routing, and return a simple response like Hello, world on the home page. It should feel easy to use from Kotlin, work well with coroutines, and include a solid way to test routes without needing a full real server every time.

Please set it up so it’s ready to run from Gradle, with clear docs for getting started and a small example app. If you need to check current docs or best practices online, go ahead and look them up.