Allow logger to add transports (#2363)

- Move all of the winston logic from FileLoggerAdapter to WinstonLoggerAdapter
- Export WinstonLoggerAdapter so it can be sublcassed
- Expost the ability to add adittional transports to logger
- Import FirehoseLoggerAdapter alongside other adapters so it can be configured.

src/Adapters/Logger/LoggerAdapter.js

@@ -6,7 +6,7 @@
 // * info(obj1 [, obj2, .., objN])
 // * error(obj1 [, obj2, .., objN])
 // * query(options, callback)
-// Default is FileLoggerAdapter.js
+// Default is WinstonLoggerAdapter.js
 
 export class LoggerAdapter {
   info() {}