Samsung/TizenRT — reverse-engineered prompt

I want this repo set up so I can actually build and try TizenRT without fighting the environment. Please use the easiest path, preferably the Docker based flow that the project recommends, and get me to a working build with the included scripts.

Start with something simple like a hello style configuration on QEMU so I can run it even without hardware. If that is working, also check whether a common supported board like ESP32 DevKitC is easy to target from the same setup. Make sure the build finishes cleanly and the output binaries are where they are supposed to be.

Please leave the project in a state where I can rerun the same steps myself with very simple commands, and add a short note with what you changed, how to build again, how to switch configs, how to clean, and how to download to a board if I use one later. If anything is unclear, look up the current docs and wiki pages online.