Adding box shadow generator

[Yadvendra016]

Closes #138

🛠️ Fixes Issue

add box-shadow generator section

👨‍💻 Changes proposed

✔️ Check List (Check all the applicable boxes)

• My code follows the code style of this project.
• [x ] This PR does not contain plagiarized content.
• [x ] The title of my pull request is a short description of the requested changes.

📄 Note to reviewers

📷 Screenshots

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Name	Status	Preview	Updated
code-magic	✅ Ready (Inspect)	Visit Preview	Oct 2, 2022 at 5:40AM (UTC)

[Dun-sin]

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Conventional Commit PR Title

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• docs: correct typo in README
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Linting Errors

• Found type "null", must be one of "feat","fix","docs","style","refactor","perf","test","build","ci","chore","revert"
• No subject found

[Dun-sin]

This is unacceptable, this PR doesn't follow the style of the project🙌🏽

The input fields and the output fields shouldn't be in the same place