Allow sorting issues by grouped reactions: most upvoted + heart, etc

[ElectricRCAircraftGuy]

Currently, sorting by 👍 for instance is great, but it misses other positive reactions such as ❤️ or 🎉 .

Adding the option to sort by grouped reactions, or "all positive reactions" / "all negative reactions" would allow better quick triaging of issues in a repository to see which ones should be prioritized first. For example, someone may upvote this issue with a 👍 and someone else may put a ❤️.

Currently, the closest thing to finding the most popular issues is to sort by a single reaction, such as 👍. So, allow sorting by grouped actions, by Ctrl + Clicking several reactions in the sort dropdown menu, and/or choosing an "actions: most positive reactions" catch-all, would be useful. This "actions: all positive reactions" might put 👍 and 😄 and 🎉 all in the same bucket, for instance.

[mifi]

FWIW I just realized that it's possible to sort by total reactions by changing the sort URL param to reactions-desc:

https://github.com/isaacs/github/issues?q=is%3Aissue+is%3Aopen+sort%3Areactions-desc

hopefully soon a UI for this too