Summary:
Show internal instructions for Flipper setup by default on "Getting Started" page. This is a follow up to https://fb.workplace.com/groups/flippersupport/permalink/955763464904312/.
I used tabs component to show both internal and external content in tabs. By default, internal content is shown, but it is possible to also switch to external.
Reviewed By: jknoxville
Differential Revision: D23649955
fbshipit-source-id: c4f956e0ee9fec69cf861d96a447f934f746dd7f
