[feature] Shortcuts for triaging priority

[mintpu]

🧩 Feature

Description

We have a static analysis software which creates hundreds of notes to the code-review.csv. Each of these notes must be manually reviewed and priority must be set manually. Having a shortcuts / keybindings for setting priority and saving would be helpful.

For example:

1. User opens first code review note on the comment explorer.
2. User presses e.g. CTRL-ALT-1. High-priority is set to the current note and it is saved.
3. User opens next code review note and presses e.g. CTRL-ALT-3. Low-priority is set to the current note and it is saved.

[d-koppenhagen]

Currently I don't have time to focus on this little side project. Feel free to send me a PR implementing this feature