Save personal preferences (or most used) for emojis.

Currently it's hard to chat fast (if you use emojis) because with every emoji that you use very often, you will still need to scroll down past these:

- The overall most used
- Other channels custom emojis

Additionally; I'm unsure why there's an eggplant in the most used emojis. Pure speculation: I think it might be either an automated test that's run on production or some organised community joke to make use of this overall preference.

Either way, I think it wouldn't be too much to ask to be able to use very common emojis, like thumbs up or the laughing one with tears, without having to spend a few seconds to search for it.