Add promptbin extension

[marcelvict]

Description

Screencast

Checklist

• [x] I read the extension guidelines
• [x] I read the documentation about publishing
• [x] I ran npm run build and tested this distribution build in Raycast
• [x] I checked that files in the assets folder are used by the extension itself
• [x] I checked that assets used by the README are placed outside of the metadata folder

[raycastbot]

Congratulations on your new Raycast extension! :rocket:

You can expect an initial review within five business days.

Once the PR is approved and merged, the extension will be available on our Store.

[raycastbot]

This pull request has been automatically marked as stale because it did not have any recent activity.

It will be closed if no further activity occurs in the next 7 days to keep our backlog clean 😊

[raycastbot]

This issue has been automatically closed due to inactivity.

Feel free to comment in the thread when you're ready to continue working on it 🙂

You can also catch us in Slack if you want to discuss this.