Attention set

[pvcnt]

Use PR assignees as members of the attention set. This requires a server-side component, which updates assigness whenever an issue changes (e.g., a new review has been posted), and a client-side component, which shows assignees as part of the attention set in the UI.

Similar implementations:

• https://graphite.dev/blog/how-google-does-code-review#attention-sets-and-turns
• https://gerrit-review.googlesource.com/Documentation/user-attention-set.html (code)
• https://docs.aviator.co/attentionset