Parametric Computer Case Script v0.1

This script will generate a computer case based on a handful of input parameters.
Included (and default in the script) is a Mini-ITX case.
TODO(and will be done soon):
-Make the script cut the case into bite-size printable chunks
-Add parameters for PSU, HDD
-Add place for power button/status LEDs
-Add card slot parameters
-Add fan spot parameters