eina-cxx: Added range types for containers

eina-cxx: Added range types for containers

Summary:
Added inarray, inlist, ptr_array and ptr_list's range types named: range_inarray, range_inlist, range_ptr_array and range_ptr_list.

Each has two "flavours": mutable and not mutable. The const versions are parameterized by a const parameter. For example: range_ptr_list<int const> and the mutable doesn't have the const, so: range_ptr_list<int>.

The difference between the two is that the const versions can't modify the elements from the sequence, while the mutable allows so. Also, the const receives a Eina_Array const* while the mutable must have a Eina_Array*.

Reviewers: cedric

CC: savio, cedric
Differential Revision: https://phab.enlightenment.org/D613