Add chips functionality

[ruskiyos]

Hello flux team!

One missing feature that I would love to see added to fluxui components is an input chips component.
There are many times where I need user input from multiple values in a text field stored as an array (or even a delimited string would be fine as the string can be split up and processed when neccesary).

This type of input typically allows users to select from a dropdown of values or to input a custom value. Once an item is inputed or selected, it becomes a chip and the next input is allowed. The input can be removed either with backspace or by pressing an icon (typically an x). Rearranging the chips isn't necessary.

Is that something that can be added to the library?

Github search and gmail composer (included screenshots) are examples of such a use case.