chore: fix package.json import for webpack5 compatibility

[barronbud]

Description

When using Webpack 5 this warning is thrown during builds:

videojs-contrib-quality-levels/src/plugin.js @ 30:33-40
Should not import the named export 'version' (imported as 'VERSION') from default-exporting module (only default export is available soon)

This updates importing package.json and updates the version references in plugin.js.

Specific Changes proposed

• Import package.json as full object named packageInfo and reference accordingly

Requirements Checklist

• Feature implemented / Bug fixed
• If necessary, more likely in a feature request than a bug fix
  • Unit Tests updated or fixed
  • Docs/guides updated
• Reviewed by Two Core Contributors