How to write an idiomatic logger in Kotlin

Kotlin has some great powerful features packed in it that we should be making use of to improve our code. This involves rethinking on our old best practices of coding. Many of our old coding practices can be replaced by better alternatives from Kotlin. One of them is how we write our logger. Though there are a lot of libraries out there that provide logging functionality, we will try to create our own logger in this recipe, just by using idiomatic Kotlin.