VROOM-Project/vroom ? reverse-engineered prompt

Build me an open source route optimization engine in C++20 that can solve delivery and pickup routing problems very fast, ideally in milliseconds.

I want it to handle things like a traveling salesman route, vehicle capacity limits, time windows, pickup and delivery pairs, multiple stops, vehicle skills, working hours, breaks, and different start and end points for each vehicle. It should work with external route data from common routing engines, and also allow a custom travel cost matrix if needed.

Please make it usable both from the command line and as a library I can call from other C++ projects. Include a clear README with basic setup, simple example inputs, and how to run a few sample optimizations. If there are tests or benchmark examples, add those too so I can see that it works. If you need to check current docs for any build details, go ahead and look them up online.