Documents parts of hdmf-schema-language that are not yet supported

[rly]

What happened?

Create a docs page on hdmf.readthedocs.io that documents that these parts of hdmf-schema-language are not yet supported:

1. value and default_value for datasets ([Bug]: default_value for datasets is not supported #792)
   • This may be deprecated in the language soon (Deprecate default_value and value keys for datasets hdmf-schema-language#30)
2. Attributes containing multiple references ([Feature]: attribute reftype list #833)
3. Certain text and integer values for quantity (Add support for other quantity values in schema #423, Disallow or explicitly allow spec quantity to be specified with a numeric string #531)
4. Datasets that do not have a data_type_inc/data_type_def and contain either a reference dtype or a compound dtype ([Feature]: Raise error when creating certain dataset specs without data type inc/def  #737)
5. Passing dataset dtype and shape from parent data type to child data type (Overridden dataset dtype and shape are not passed from parent to child #320)

Steps to Reproduce

n/a

Traceback

No response

Operating System

macOS

Python Executable

Conda

Python Version

3.12

Package Versions

No response