Improved logging

[nickrandolph]

What would you like to be added:

Currently there's minimal logging throughout the Uno Extensions. An ILogger instance can be accessed via constructor injection, there's a significant performance overhead associated with logging. Need to consider a more performant way to log throughout the uno extensions

Why is this needed:

Logging is important so that consumers of the extensions can diagnose issues and understand what's going on without having to resort to walking through the extensions source code

Priorities:

• Define how extensions should log, to minimise impact on performance
• Define what should be logged (ie what granularity)