Set and add docstrings style guide for better documentation

[thatvideoshopguy]

Description

Improve the documentation and understanding of the codebase by adding docstrings to all functions. We should pick a specific docstring style, like Google Style Guide and stick to it. This will provide valuable information for developers working with the code.

[shashankshet]

by looking at the code it looks like docstrings are already added to the functions, can you please provide more details on which functions we plan to add docstrings?

[prashantpadhy]

can you assign it to me?