Add Support for `DeltaSharing` format

Currently, the scan operator will raise a `NotImplementedException` if a UC table is not Delta format. This issue proposes adding support for the Delta Sharing format, which should be a relatively trivial addition. Calling a Delta Sharing server/UC Metastore will return a list of presigned file URLs which can then be used to set the `inputs` [variable](https://github.com/duckdb/uc_catalog/blob/main/src/storage/uc_table_entry.cpp#L58).