Improve conversion from collections to arrays

[DanielGronau]

Java collections in Kotlin can be easily converted to arrays using reified generics, and it would be nice to have the same functionality directly on Vavr collections.

The implementation can be as simple as that:

inline fun <reified T> io.vavr.collection.List<T>.toTypedArray(): Array<T> = this.toJavaList().toTypedArray()