Add static info bottom bar to the code-oriented pages

Created by: AlicjaSuska

Part of the tracking issue #16165, RFC 250

Description

Create the horizontal bottom bar for the code-oriented pages that displays static info from extensions.

Design details Figma

This issue should cover the following:

• add a horizontal bottom bar
• add static info items
• add tooltips for the extensions that do not display all the info in the bar, ex. code-ownership. Tooltip delay: 1 sec
• add hover state to the static items that have tootlips
• add the empty state when there is no static info from extensions - 'No information from extensions available' label and the tooltip on hover 'Some extensions display static data in this bar. Find extenions in Sourcegraph extensions registry'

Important notes:

• bottom bar is displayed only on code-oriented pages. For now, there is no bar on any other view (search results, repo page, directory page etc.)