Replacement of RunAs.exe

[MrFly72]

This code is great.
But I changed it to Function "Invoke-RunAs" as I dont like runas.exe be overwritten.
Additionally it does then autoload.
What I dont like about overwriting RunAs:
This function has slightly different possibilities in calling so replacing the runas is in my eyes not a really good idea and might fail for some people. I want my guys to intentionally use Invoke-RunAs instead of Runas, so they know what they are using.