Filter comments by reactions

GitHub has only the Active and Resolved states for comment threads. This can be painful for complex PRs with large numbers of comments, where it would be more productive to track the status of thread in a finer grained way.

I sometimes use emoji reactions to simulate these states, e.g. using 👀 on the original comment to indicate pending (I'm now working on the change that addresses the thread, I haven't pushed it yet), or 👍 to indicate addressed (I pushed a fix, but original reviewer should check, decide if they agree that the problem is resolved, then hit Resolve on the comment thread).

As part of working with comments "tagged" in these ways, it would be nice to be able to filter the comments list, by whether certain reactions are present on the comments or not.

Comienza localizando en el repositorio la lista de comentarios de pull request y sus puntos de entrada existentes para el filtrado Active/Resolved. Determina cómo se representan las reacciones a los comentarios y, después, define el filtrado de comentarios con reacciones seleccionadas; se considera terminado cuando la lista de comentarios puede filtrar por la presencia de una reacción sin alterar los estados existentes.