Merge Images Vertically

[jrcamelo]

Description

Adds a script that can merge images inside a subfolder vertically using Pillow.
It is useful for comics and webtoons.

Fixes #31

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Documentation Update

Checklist:

• I have named my files and folder, according to this project's guidelines.
• My code follows the style guidelines of this project.
• My Pull Request has a descriptive title. (not a vague title like Update index.md)
• I have commented on my code, particularly in hard-to-understand areas.
• I have created a helpful and easy to understand README.md, according to the given README_TEMPLATE.
• I have included a requirements.txt file (if external libraries are required.)
• My changes do not produce any warnings.
• I have added a working sample/screenshot of the script.

[tusharnankani]

Looks good to me 👍🏻

• Please comment on your code for better understanding.
• Fix DeepSource errors.

[jrcamelo]

Added comments

[AdityaJ7]

@allcontributors please add @jrcamelo for code

[allcontributors]

@AdityaJ7

I've put up a pull request to add @jrcamelo! 🎉

[github-actions]

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