[landing] [feat] [ENG-353] add team layout

Summary: adds generic layout to match expo.dev https://expo.dev/about

Test Plan: layout should generally look the same

Reviewers: atul, ashoat

Reviewed By: atul, ashoat

Subscribers: ashoat, palys-swm, Adrian, karol-bisztyga, yayabosh

Differential Revision: https://phabricator.ashoat.com/D3658