Correct logger config and imports

Logger is not used correctly in some places of this project.

ex: In web.js, logger is imported via winston instead of utils/format.js (rename file to logger.js for readability)

It creates an error in console when trying to log:

[winston] Attempt to write logs with no transports {"message":"in-sylva.source.manager service is up and running on localhost:5000","level":"info"}