Every time my players spawn a car it comes with over 900k low grade. Please give an option to spawn without fuel or allow us to set how much like 50lgf

Implemented. Bumped the version to 2.0 since requiring the permission for auto fueling is a breaking change for users.

- Players now require the spawnmodularcar.autofuel permission to have their car auto fueled.
- The amount of fuel given is an option in the config called FuelAmount, which defaults to -1 representing max stack size.