D2b

- Update `Description.DATATYPES` (BIDS v1.7)
- Update `FilenameEntities.KNOWN_ENTITIES` (BIDS v1.7)
- Update `customLabels` (i.e. entities) in JSON Schema (BIDS v1.7)
- Improve type annotations in `d2b.py`

- Add support for `filepath` and `SidecarFilepath` properties as valid match `criteria`.

Updates to the `db2 scaffold` command:

- `dataset_description.json` - now consistently has `raw` as the default `DatasetType`. (Before the CLI output differed from the behavior of the native python API)
- `participants.{tsv,json}` - these files are now only generated _on request_ (with a flag) otherwise they are omitted

This release:

* Fixes 4, Specifically
* Changes folder names in temporary directory to be derived from the full path of the corresponding input directory.
* Adds the `delete=True` flag to the call to `rsync(...)` in `D2b.run`, this way any extraneous files that are present in the temp directories which are not in the corresponding input directories (if any) are removed.
* Adds a license (MIT)
* Updates bumpversion configuration

- Make dataset_description.json generated by `d2b scaffold` BIDS compliant
- Add parameters to enable modification of dataset_description.json that is generated by 'd2b scaffold'