Add a Custom Emoji

I would like to suggest a feature in which I can add custom emoji or imojis.

On most of my apps I would like to replace some words with icons, but the images always show too big on the cards, so I started using emojis instead. It works well, but now Iā€™m limited on the amount of emojis I can use to refer to each key-word.

By adding my custom emoji I would have a larger reference array and my apps would look much better.
For example: FTL = :truck:, LTL = :articulated_lorry:, etc.