Added original Microsoft files

Keeping this commit in the history might make merging future changes later easier.  Hey, I can hope.
Renamed files
Major cleanup

Every part of this resource had some goofy logic.  Creation of the service was based on whether the Ensure parameter was explicitly passed, and not simply on whether it was set to Present or Absent (including when using the default value of Present.)  Configuration of the rest of the service's properties was also only happening properly when Ensure was NOT explicitly passed.  Test-TargetResource was incorrectly throwing exceptions instead of just returning $true or $false.

Also removed [ValidateNotNullOrEmpty()] from all of the optional attributes which would default to $null or an empty string anyway.  This makes the resource more friendly for use in a composite resource, which can just pass along null / empty values and not cause errors.  Added an empty string to the ValidateSet attribute for the BuiltInAccount property, for the same reason.

Set the resource to use LocalSystem by default, if the user does not pass in either BuiltInAccount or Credential.

There aren't any tests included with the resource kit.  I'll be putting this through its paces while testing another composite resource that was blowing up by relying on xService, and will come back to write Pester tests for cService later, as time allows.
Updated module version number