Improve imports and file structure

[Alessandro100]

There are certain imports that are being written like this

import { formatProvidersSorted } from '../../../../../../../screens/Feed/Feed.functions';
import { buildAvailabilityCalendar } from '../../../../../../../screens/Feed/lib/availability-history';
import { displayFormattedDate } from '../../../../../../../utils/date';
import SectionContainer from '../../../../../../../components/SectionContainer';

We can have cleaner imports by implementing aliases like @mdb/components/SectionContainer

Also review the type of components in these folders if it makes sense (ex: A component specific to a page should be located near that page, but a component used more globally should stay at the root component)