Add the bulk transactions extension, client #11
Description
This functionality was provided in the old version of this project and may be able to be reproduced here. https://github.com/jonhealy1/stac-fastapi-mongo/blob/a3eb1f38a780c0588ee7240490ddd2c30d56662f/stac_fastapi/mongo/stac_fastapi/mongo/transactions.py#L99-L136