Bbox in geo collection

[bariela]

Description

Adding bounding box in features in geojson collections as geoindexed field

Motivation and Context

Features have often quite complex geometries, which are too complex for geoindexing functionality on mongodb,
bounding boxes have only four points in simple rectangle as shape

How has this been tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• I have read the CONTRIBUTING document.
• I have checked to ensure that there aren't other open Pull Requests for the same update/change.
• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.