Oh, I didn't know that, I will add it immediately. Thank you so much !
To add the emoji, you just need to copy and paste it from a website or any soft that lists emojis.
Viewing post in 100+ Pixel Buttons - Pack (16x16) comments
You can leave a comment here to support my proposal about making metadata visible for those who are interested in it https://itch.io/t/2919128/metadata-encouragement#post-7952450