Request: log messages to user/application logger

[vladimir-v-diaz]

Description of issue or feature request:

It would be nice if applications may pass in loggers to TUF so that update messages are logged there instead.

Current behavior:

Log message are directed to internal file handlers, or the console.

Requested behavior:

There should be an option to also log TUF's logger messages to application's logger.

[jku]

I'm going to close this:

• as far as I can tell the logging logger hierarchy gives the application full (if not always the most ergonomic) control
• I think library modules should not make decisions on where to log: this is an application choice

Please reopen if it sounds like I'm not considering a use case you have in mind.