Wind and aerodynamics simulation in Veloren

Originally dated 2021-06-16, the wind simulation was a proof of concept as part of a thesis. A modified version of the glider physics as found in the main game was used to demonstrate the effects in game. Everything is of course published as FOSS. The wind simulation branch can be found at https://gitlab.com/oresavna/veloren/-/tree/wind-sim while this video was made using wind sim + glider improvements (probably the one) found at https://gitlab.com/veloren/dev/veloren/-/tree/lboklin/improve-gliding-wind-test