Update libraries.python3.vm with new function

[emtuls]

Details

From #935 (comment), there is a need to standardize the location of our python installation logs.

Currently, libraries.python3.vm uses $(Split-Path -parent $MyInvocation.MyCommand.Definition) to determine where to store its log, which leads to C:\ProgramData\chocolatey\lib\libraries.python3.vm\tools. This seems like an odd location and not somewhere I would check for log data related to installing things.
We have a dedicated folder called C:\ProgramData\_VM that we claim we should put logs into, so this seems like the best place to store them.

Also noted, libraries.python3.vm has a dependency of vcbuildtools.vm, which only seems to be necessary for a single library (acefile) and causes this package to take much longer to install. I think it might be worth separating that library into its own package at a later time if this becomes an issue/annoyance.