Config page

[OmriLevy888]

Config page for the app

• [x] Default playlist
• [x] Playlists shown when swiping up
• [x] Music source

Make all of these hard coded for now and just focus on the ability to change from a given source of inputs (playlists, sources...).

This page should be navigable from the main page using the bottom app bar (tab switch bar).

[shakedaes001]

Basic version. Will need to beautify and enhance later on.