[1/n] [landing] add team page route

Summary:
add a route for the team page

Test Plan: go to route, make sure it renders

Reviewers: atul, ashoat

Reviewed By: atul, ashoat

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

Differential Revision: https://phabricator.ashoat.com/D2748