Adds filters, compressors and serializer props to Array

[normanrz]

Adds filters, compressors, serializer properties to the Array and AsyncArray classes. These properties mirror the kwargs that users provide in create_array, i.e. inner codecs in sharding are surfaced. Array.info is adapted accordingly. Fixes #2633 #2649.

I also fixed a bug where strings/bytes dtypes couldn't be used with sharding due to validation errors.

TODO:

• Add unit tests and/or doctests in docstrings
• Add docstrings and API docs for any new/modified user-facing classes and functions
• GitHub Actions have all passed

[d-v-b]

Will this prevent arrays with no filters at all from displaying the fact that they have no filters via the .info method?

[d-v-b]

likely out of scope, since my question is really about the pre-existing behavior of this function

[normanrz]

The "Filters : ... " line wasn't shown if filters was None, but it was shown if filters was (). Now, it is not shown if None or ().

[d-v-b]

Don't we want to explicitly show the value of filters, even if it's ()?

[normanrz]

We could. I don't have a strong preference here.

[d-v-b]

IMO it's better to show a static set of properties with this function, but if that's annoying to implement here we can defer for a separate PR

[normanrz]

What about "Serializer", which doesn't exist for v2 arrays?

[d-v-b]

maybe None there? in principle there's nothing stopping someone from implementing a v2-compatible BytesCodec in numcodecs, in which case we might end up with v2 arrays with a serializer

[normanrz]

Well, there is no place in the v2 metadata for a serializer.
I opted for not showing the serializer field in the Array.info.

[d-v-b]

happy to see some simplified tests via these changes!