Added overload for << in vehicle to save vehicle parameters. tested, works.
Added a loader for vehicles. Tested, works.
Added windowsDirectory which lists out all files contained within the current directory and prints them to the terminal. Tested, works.

TODO: Make this function return a vector of strings to use for the loading functions.
listDir now returns a vector of strings containing all the file names within a component folder directory.
Removed output data from util and moved it to the savers namespace and file.
Added a check to loaders::loadFile to check if the file was sucsessfully opened (ie. if it exists). Untested.