Create derived atom for symbol

[whoabuddy]

Is your feature request related to a problem? Please describe.

On a few different components there is a need to use the symbol throughout in headers, text, placeholders, etc.

The best pattern so far for this is to set a useMemo() hook that sets the symbol based on the current city selection or returns undefined.

Describe the solution you'd like

This feels like it could be generalized further as a derived atom, where the atom value follows the same pattern and can be used on any page where a symbol is needed.