Beta Hybrid Citybus 8.1.0

I completely redid the hybrid drivetrain from scratch, initially on the ETK800 (coming soon!) and then ported it (with very few modifications) to the citybus. The new system does not use thrusters, but rather simulates electric torque directly on the gearbox output (as a real hybrid transmission would operate). It's also far more configurable, hence why it was able to be adapted to both a small hatchback and a large city bus with none more than a few parameter tweaks.

The biggest thing you'll notice when driving is that regenerative braking (via letting off the throttle) is off by default, and you must shift to "L" to enable it. However, using the brake pedal will still give some regenerative brake power.

You can also now press "E" (by default) to enter "EV only" mode, disabling the engine, and "Shift+E" to enter "fast charge" mode (while in Park only) which will run the engine at a high idle to charge the battery faster.

I will be posting a UI app soon to monitor the battery level, but it will be a separate mod so that it can also be used with the ETK800 and any other hybrids that use this system.