Add competive coding templates in Python

[Sreetama2001]

[saishubham468]

Hi, @Sreetama2001 could you please explain this issue further as I would like to take it up.

[Sreetama2001]

@saishubham468 Add algorithms you can use as a cp template while writing code in python in a contest ...

Use a class, write the methods and how will you use it in cp.