As the name says, this adds a second form of speaking practice, targeting a single sentence. The added task is just a demo to be removed afterwards. The recording logic is now shared with the initial speaking practice style, using a modal, so we added most of the code to a separate component.

Checklist:

• I have read and followed the contribution guidelines.
• I have read and followed the how to open a pull request guide.
• My pull request targets the main branch of freeCodeCamp.
• I have tested these changes either locally on my machine, or GitHub Codespaces.