Reusing notes

Is your feature request related to a problem? Please describe.

When there is a hot topic with a lot of misinformation going around, it is frustrating to have to write notes on every post and wait for all the notes to slowly reach helpful status.

Describe the solution you'd like

Be able to use the note ID to reuse a high-quality already helpful note and have that note appear faster than usual.

To encourage people to reuse notes, and also to encourage people to write high-quality notes that other people might consider reusing, it would be necessary to give writing impact to both the user who reused it and the user who created the original note.

The issue names no files, tests, or entry points, so first inspect the Python source to locate note creation, helpful-status handling, reuse by note ID, and impact scoring. Done would mean an already-helpful note can be reused and both the original author and reuser receive the intended writing impact.