Added SPEN_REPORT instance to CMyDevice

This will be used to fill input reports and to store data from output
reports.
Added const for pen report ID
Initialized pen struct in CMyDevice instance

Set InRange, X and Y parameters for test purp
Use m_Device->m_SpenLastState for input reps

Added code to use device variable to fill input report. Commented
default code
Testing SetOutputReport
=)