Components: Bottom-sheet component

[jelbourn]

https://material.io/guidelines/components/bottom-sheets.html

[Springrbua]

There seems to be a PR for this: #9764

[jelbourn]

Closed via #9764, will be in 6.0

[angular-automatic-lock-bot[bot]]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{_This action has been performed automatically by a bot._}