Feature request: add button/feature to run sim out of realtime and record results to wav file

[TheRektafire]

There are several reasons why I think this would be a good feature to add:

1. My laptop is very low spec and sadly can't run the sim at full speed without stutters even with the update frequency turned down low, this means sadly I can't just record the output in audacity like I was hoping to be able to do, having this feature would allow people with really low spec pcs/laptops like myself to still be able to use it to an extent even if you can't run it at full speed in realtime
2. Somewhat related to #20 Being able to record to a wav file would be a good feature to have for games, with most popular game engines it would be pretty difficult to integrate the sim directly (not to mention the aforementioned negative performance implications which if you're making something like a racing sim where you have many cars driving at once it would be really bad) so the best way to use the sim in this case would be to set up a list of throttle/shift inputs and have the sim read through those inputs and render out a wav file based on them, kind of like how a DAW can render out a song based on the notes in midi tracks. It obviously wouldn't need to be too complex, just something like "hold throttle at x% for y seconds, shift into gear z," etc.