Chore: Remove unnecessary Win32 calls / convert to Ruby stdlib

[OSXLich-Doug]

Background: lich.rbw has a significant amount of unnecessary Win32 calls from Lich 4 port.
Impacts: lich.rbw, msgbox for install / warning before game starts
Approach: Evaluate need for each existing Win32 call, replace with appropriate stdlib calls where necessary
To-do: Strip all Win32 calls and substitute with Ruby STDLib calls wherever possible
Needs: PR prototype for team tests
Currently working: Doug

Status:
07/15/2021 - prototype created, all existing Win32 calls removed, one new Win32 call created to support SIMU specific FE (Wizard / Stormfront) installation locations on user local system.