Update tailwind config

[MikeMcChillin]

In order to reference tailwind configs in JS, we need a slight refactor to our tailwind.config.js file:
Turning const corePlugins = require('./theme/config/corePlugins'); into import corePlugins from './theme/config/corePlugins'; and then within each referenced file, adding export default corePlugins (or w/e the file is).

This is relatively easy to do, and i've done it here on merus for reference
More here: https://stackoverflow.com/questions/70983798/how-to-use-tailwindcsss-resolve-config-with-typescript