Feat/v2 concerto graphical editor

[soniaduma]

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Author Checklist

• Ensure you provide a DCO sign-off for your commits using the --signoff option of git commit.
• Vital features and changes captured in unit and/or integration tests
• Commits messages follow AP format
• Extend the documentation, if necessary
• Merging to master from fork:branchname
• Manual accessibility test performed
  • Keyboard-only access, including forms
  • Contrast at least WCAG Level A
  • Appropriate labels, alt text, and instructions

[mttrbrts]

@soniaduma can you target the main branch for the upstream repo, please? I have a fix for the build issue and would like to merge your contribution, thanks!