Refactor OpenFOV class #41
Description
Currently OpenFOV is used to retrieve two variables from the config file - the user-selected FOV and a potential modded cheat manager class.
First of all, the class's name makes no sense when it is not just handling FOV. Second of all, it would be nice to roll this variable retrieval into a new utility class along with some other functions, eg version checking. Could use class'OpenRVS' from #40 ?
At the very least, I'd like to rename this class something like "OpenConfigManager" or something and thus have its name match its use.