Add layout component

Summary:
Adding a layout component that will be used for every page to wrap it with a proper head and later use the nav and footer component.
The component can take several meta props so it can be customized as needed per page

Test Plan: run it and inspect the head

Reviewers: #bitcoin_abc, bytesofman

Reviewed By: #bitcoin_abc, bytesofman

Subscribers: bytesofman

Differential Revision: https://reviews.bitcoinabc.org/D13621