Update style of JS imports to use paths relative to the src directory

[ravicodelabs]

Update code to use an import style relative to the src directory, rather than the current approach of using an import style relative to the source file. Using an appropriate parsing method/library, the @ symbol can be a placeholder for the src directory.

For instance, currently we might use: import { setMapCenter } from '../../actions/actions';
After this change, we would have: import { setMapCenter } from '@/actions/actions';

[gcardonag]

For anyone reading this in the future, we are exploring this update after a dev circle poll to explore alternative options for our imports: https://codeforphilly.slack.com/archives/C03F02LUDJQ/p1725144372740349

[gcardonag]

This will be made easier by work @RNR1 is doing to switch us over from create-react-app to vite-js 🎉