Set up main page with bottom navigation and navigation drawer.

[ScudBt]

bottom navigation with three buttons corresponding to find, share, and profile, possibly adding collections afterwards. navigation drawer's purpose is unclear sofar.

[ScudBt]

https://github.com/ucsb-cs48-w20/gauchoshare/tree/ScudBt

[ScudBt]

Used seperate buttons instead of nav bar but have same purpose and function