Update styles and add Prettier

[shadforth]

High-level overview

• Add Prettier 💅 💇💃
• General style improvements
  • Fix padding and search bar on Discover Screen
  • Fix search bar and results shadows on SRP
  • Add styles to services boxes on Details Screen
  • Fix wrapping of title on Details Screen
  • Add tab bar icons

Callouts

• 👎 Some repeated code for the search bar on Discover and SRP – to be fixed in a refactor PR
• 👍 Removed FontAwesome in place of Feather icons as per Aaron's notes
• 👍 Jolly's suggestion is use Feather for GUI and FontAwesome for categories in future

Preview

Discover Screen

Search Results Screen

Details Screen