Win installer: Add functions that can detect installed version
Win installer: Add functions that can detect installed version

No functional changes.
InitializeSetup() (currently commented out) can inform the user
about the version differences and uninstall the old version before
installing the new one.

Signed-off-by: Dan Nechita <2f664a27dbc3ee2034ed9e950b3808890cb5416a@analog.com>

analogdevicesinc/Pixelpulse2,analogdevicesinc/Pixelpulse2,analogdevicesinc/Pixelpulse2