Is there a specific reason we have `hashSetOf()` a...

# stdlib

[Marc Knaup]

Is there a specific reason we have hashSetOf() and toHashSet() for Set but hashMapOf() and no toHashMap() for Map?
Also, according to the KEEP there should be a toSortedMap() but there isn’t it’s JVM-only.

https://github.com/Kotlin/KEEP/blob/master/proposals/stdlib/map-copying.md