[web] Introduce common Tabs component

Summary:
Introduce Tab component for displaying interface in tabs. It is not used yet. It will be used in Thread Members Modal.
In the next diff, I'll replace "Thread List tabs" with this component.
The component receives tabs, information about active tab and tab setter from parent - it doesn't keep the state with current active tab itself.

Test Plan: Testing the component will be possible when it will be used in Thread Members Modal in one of next diffs.

Reviewers: palys-swm, benschac, atul

Reviewed By: palys-swm, benschac

Subscribers: ashoat, Adrian, atul, karol-bisztyga

Differential Revision: https://phabricator.ashoat.com/D3369