Memory and storage copying

[g-r-a-n-t]

What is wrong?

We do not have operations for copying segments of memory to memory or segments of storage to storage. This makes it so that assignments like my_array = my_array or self.my_array = self.my_array trigger an unimplemented panic during compilation. We should also be using memory-to-memory copying when passing values into other functions.

How can it be fixed

Implement said copy operations and use them for assignments, declarations, and call arguments.