chore(project): update nextjs config and upgrade various deps

[kennylam]

Description

This addresses various build and testing issues in the project.

Note: The g100 example page is not correctly applying the theme for some components. While this needs to be fixed, the purpose of this PR is to address build/percy errors that are failing during CI workflows. Issue captured in #227.

Changelog

New

• eslint-config-carbon and stylelint-config-carbon packages added
• upgrade project to use Yarn v3
• devDeps rc file configs all moved to package.json
• add --no-stash to husky config to prevent changes reverting when pre-commit checks fail

Changed

• all scss imports moved to global.scss to avoid duplication which was increasing build times
• upgrades various dependencies to the latest version

Removed

• remove local lint packages in favor of NPM-hosted Carbon variants
• remove unnecessary e2e tests for white and g100 theme pages (components in these pages already exist and tested by other example pages)
• webpack4 removed - no longer supported as of NextJS 12

[ibmdotcom-bot]

Deploy preview created: https://s3.us-east.cloud-object-storage.appdomain.cloud/deploy-previews/228/index.html

Built with commit: 785ce0a74964de1ab1944efc925c62f0903d79ce