Autocomplete

Before the first release, it would be fine to add autocomplete (according to this #75 also). Let's focus on the users only, but keep in mind, that we should have the ability to use it for emojis in the future. Ionic doesn't have an autocomplete component itself. From the first look, I haven't found any modules for ionic-react usage. Maybe, it will be easier to write our own component, based on ionic search input.