Emoji picker improvements 🥳

Prompted first by @Josef Davies-Coates and then followed up by another customer.

The emoji picker now has:

• the full set of emojis

• a search field (with support for multiple languages)

• and a personal to you "frequently used" list

So you should be able to quickly find the emoji you want, and when you go to use it again, it will be at the top of the list 🤠