Introducing new arena and function that allows an object to be ignored by GC

[Robertorosmaninho]

This PR introduces a new Arena and a function to bypass the Garbage Collector, as it may have some times when we don't want to waste time deallocating memory that would be reallocated later for the same data.

The freeze hook function returns the same block with a different allocation in a new Arena.

[Robertorosmaninho]

A c++ unittest is under development, but this was already tested using a K definition for a future K PR.

[Robertorosmaninho]

Closing as the performance gain isn't meaningful.