Fix WMI memory leak

Removed usage of WMI/Win32OLE because of memory leak with mass event.
Need to add this version of gem win32/eventlog: https://github.com/manusfreedom/win32-eventlog
Tested on 500000 events.
Add support of beginning and end position on first start.
Removed support of multi EventLog parse at one time. Declare multi input to support multi EventLog.