Allow users to specify the directory to cache the uncompressed package artifacts

[JZiegener]

Is your feature request related to a problem? Please describe.
Currently the package cache is hard coded to store in a temp directory that is based on the operating system. This causes issues when attempting to use this package in IIS was the SYSTEM user, as the windows SYSTEM user profile directory is write protected.

Describe the solution you'd like
Users should be able to specify what directory to used as a cache.

Describe alternatives you've considered
Overriding the "UserProfile" Env variable allows the directory to be changed, however it also changes the user profile for the entire process. Allowing this directory to be specified would reduce the possibility for unintentional side effects.