Add a component that can be used to easily "slice" an array

[TonyTroeff]

I need to access the last element of an array. With the other elements I want to execute another operation. However, this pattern may reoccur recursively and that means that we will have n partial copies of the original array in memory.
If we could "slice" it somehow, this would help us optimize the process a lot.

[TonyTroeff]

There is no need to implement this. The ArraySegment<T> wrapper is a component that can be used for this job.