Add MemorySim_LoadFromFlashImage() to MemorySim

This API allows an image binary to be loaded into memory, even a
read-only FLASH memory region.
Add pinkySimCommandLine module

This module is able to parse the pinkySim command line.  It is also
responsible for setting up the MemorySim module with the appropriate
RAM and FLASH memory regions and loading of the image binary into
the FLASH region.