"Autocomplete is basically choices but dynamic. every time the user presses a key in an autocomplete option, the bot gets an event and it can respond with what strings it wants discord to display as choices instead of having the choices be static." - Urcute#3119 on Discord
For this guide, our command will be named autocomplete, this is not some built in command.
Before we can start to recieve autocomplete events on an option, we have to actually tell discord that we want it.