Adding comments in the codebase

[nox1134]

Fixes

Fixes #49 by @NEGRAH-S
cc: @TimidRobot

Description

This PR adds comments to the codebase. Comments have been added to clarify the purpose of functions, describe their inputs and outputs.

Checklist

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the default branch of the repository (main or master).
• My commit messages follow best practices.
• My code follows the established code style of the repository.
• I added or updated tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

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[nox1134]

@TimidRobot I have added comments throughout all the files wherever necessary.

[TimidRobot]

Good work!