style: reformat all files properly

[mcmxcdev]

Pre-flight Checklist

Please ensure you've completed all of the following.

• I have read the Contributing Guidelines for this project.
• I agree to follow the Code of Conduct that this project adheres to.

Description of Change

• remove .json from .eslintignore
• add type intellisense to .prettierrc.js
• install missing @jest/types which is used in jest.config.js for type intellisense
• split up typecheck and lint into two separate commands
• remove --require-pragma flag from reformat-files which leads to unformatted files
• install suggested @types/prop-types and @types/react-loader dependencies
• add @ts-expect-error to Loader usages
• reformat all scss files automatically with reformat-files command

Motivation and Context

The project needs to reach a state where all files are properly formatted and we profit from type intellisense where possible.

Screenshots

Checklist

• My pull request is properly named
• The changes respect the code style of the project (pnpm prepare-code)
• pnpm test passes
• I tested/previewed my changes locally

Release Notes