This is to create the container that will hold the feed contents.
Initially, this will be a very basic RecyclerView that holds a single "type" of card. This will later be expanded to support different card types.
This can exist as a Fragment (separate from the current Main Page, and accessible separately in the Nav menu).
The nav menu option can be enabled via Developer Settings
This component should not have any knowledge of the contents of each card, but it will eventually provide an "interface" that will be implemented by all the different card types.