STAC Item Storage extensions
This extensions could be used to add necessary storage information to our STAC Items: https://github.com/stac-extensions/storage
Currently it only supports the big cloud providers, but there is already an issue to expand this to non-AWS S3 storages (https://github.com/stac-extensions/storage/issues/16)
We could make a PR there that incorporates everything needed to describe OpenStack Swift Object Storages.