Icon request: bounding-box

## Icon Request

* Icon name: bounding-box
* Use case: For annotation tool
* Screenshots of similar icons:
![1001398750](https://user-images.githubusercontent.com/15242292/133201615-303811d5-bff5-469e-be70-eee26c5776d8.jpg)
