Refactor to use ILogger

[tdashworth]

Is your feature request related to a problem? Please describe.
This isn't problem-related but while refactoring powerapps-packagedeployertemplate, I switch the services to use Microsoft's Logging Extensions. While integrating with this library, I wrote a wrapper for a very similar ILogger interface.

Describe the solution you'd like
My question and the proposal is to update this library to use the same logging abstraction provided by MS for better integration with other tooling. For example, the respective Xrm Toolbox plugin could also be updated with a custom ILogger implementation.

Additional context
https://docs.microsoft.com/en-us/dotnet/core/extensions/logging

I've opened this as a discussion before we consider investing time in the refactor. 😄