Porting `stack.py` to C++ backend

[czgdp1807]

Description of the problem

We need to port stack.py code in Python to C++ code. We did this for arrays before,

1. Python code for arrays - https://github.com/codezonediitj/pydatastructs/blob/master/pydatastructs/linear_data_structures/arrays.py
2. C++ code - https://github.com/codezonediitj/pydatastructs/tree/master/pydatastructs/linear_data_structures/_backend/cpp/arrays

You can follow a similar pattern for stacks. Feel free to ask any queries.

Example of the problem

References/Other comments

[nubol23]

I want to work on this Issue

[czgdp1807]

Sure. @nubol23. Feel free to go ahead and start working on it. :-)

[PoulasthaMukherjee]

@czgdp1807 May I work on this as well?