Add possibility to add additional folders to clone

[2shady4u]

What is my issue?
I'm using this package to test a MP game that uses Fmod.
For Fmod, the game needs access to the compiled *.bank-files that contain my game's music and sound-effects.
As such I need a symbolic link to this Fmod/-folder.

Proposal?
Add a way to add additional folders to the list of folders that require a symbolic link.
Either by adding an entry into the ProjectSettings or in the Project Cloner drop-down menu