Updated to new version of JFortniteParse

Nothing to special. Just updated to match the new model of JFortniteParse

First public release of the new FortniteDownloader

Hey,
I decided to publish my new library to download Fortnite's game files and work with them without completely downloading them.
Core Features:

• Downloading Fortnite's game files
• Read specific parts of game files
• Directly read from pak files while just downloading the needed chunks
• Multithreading support

I hope you like it :)