Convert Logger from a class to an interface.

Convert Logger from a class to an interface.

This set of changes makes it easier to insert any Logger implementation into a method and to ask for instances during object creation so that objects that require logging and testing can be easily tested.

- Add Loggers for individual Logger types.
- Add static methods for existing TagLogger.
- Add NoOp logger implementation.

Change-Id: I30c03667c88214cff03521d0a1f6fa3b00851a68