feat: add Prettier

[b-mendoza]

Adds Prettier as a code formatter, and Husky and Lint-Staged to run Prettier on the staged files before committing them.

Motivation and Context

Code consistency.

Fixes https://github.com/rbjks/rbjks.github.io/issues/65

Description

• A new package.json and a package-lock.json file have been added to the project.
• concurrently, husky, lint-staged, prettier, and prettier-plugin-packagejson have been added as dev. dependencies.
• A config file for both Prettier and Lint-Staged has been added.
• 4 new scripts have been added to the package.json file to check and fix prettier errors.
• The entire project has been formatted using Prettier.

How Has This Been Tested?

The changes were tested locally using the Live Server extension, and the browser console was checked for any errors.

Types of Changes

• [ ] Bug fix (non-breaking change that fixes an issue)
• [x] New feature (non-breaking change that adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.

[agriyakhetarpal]

Thanks for the PR, @b-mendoza—it is a bit big but I guess a lot of it is just formatting stuff and related changes—will review this after the new year!

[agriyakhetarpal]

Please feel free to open an issue where we can discuss any further things to be taken care of @adityaraute (besides the instructions for contributors)

[adityaraute]

Please feel free to open an issue where we can discuss any further things to be taken care of @adityaraute (besides the instructions for contributors)

I thought that's precisely why we need another issue - for the contribution guidelines