Unifying assets folder

[fellyph]

Motivation for the change, related issues

This pull request moves the image assets to the static folder to avoid duplication of assets and reduce the errors with missing assets.

Based on issue #2516

Steps to test

• Check out this pull request branch locally.
• Run npm install
• Run npm run build:docs and check if the build has no errors
• Run npm run dev:docs
• Open the local site in your browser (http://localhost:3000/wordpress-playground/).
• Navigate through the documentation, specifically checking pages within the Blueprints and Main sections:
  • "Troubleshoot and Debug Blueprints"
  • "About Playground > Build"
  • "Build your first Blueprints"
  • "Web Instance"
  • "Build your first blueprint"
• Verify that all images load correctly and are not broken.

[brandonpayton]

I reviewed the content changes and built and looked at a page or two. This looks good to me. Thank you!