Support LoggerFactory

[lavrov]

Abstract LoggerFactory[F[_]] which would provide implementation agnostic factory methods. Having such factory would allow one to choose implementation at one place once.

[lorandszakacs]

Agree that this would be useful. I am willing to bikeshed the naming though. Factory is way too java.

[sirmax]

Regarding the naming, how about Loggers[F[_]]? Its API can mimic that of Slf4jLogger

trait Loggers[F[_]] {
  def get: Logger[F]
  def getFromName(name: String): Logger[F]
  def getFromClass(clazz: Class[_]): Logger[F]

  def create: F[Logger[F]]
  def fromName(name: String): F[Logger[F]]
  def fromClass(clazz: Class[_]): F[Logger[F]]
}

As a side-note: perhaps, it would be pragmatic to return not a plain Logger[F] but a full-blown SelfAwareStructuredLogger[F].

[ivan-klass]

Seems like #629 is related PR for this

[lorandszakacs]

Available starting with 2.3.0 and 1.7.0 respectively.