Support inline_array kwarg in open_zarr

[dcherian]

cc @TomNicholas

What happened?

There is no way to specify inline_array in open_zarr. Instead we have to use open_dataset.

Minimal Complete Verifiable Example

import xarray as xr

xr.Dataset({"a": xr.DataArray([1.0])}).to_zarr("temp.zarr")

xr.open_zarr('temp.zarr', inline_array=True)

ValueError: argument inline_array cannot be passed both as a keyword argument and within the from_array_kwargs dictionary

xr.open_zarr('temp.zarr', from_array_kwargs=dict(inline_array=True))

ValueError: argument inline_array cannot be passed both as a keyword argument and within the from_array_kwargs dictionary

[krokosik]

There are plans to deprecate the open_zarr method in favor of using open_dataset and open_dataarray only. See #7495

[krokosik]

Maybe we should instead add an error that tells the user to use open_dataset instead?