Get data without schema

[vallsv]

This PR move back a feature from CompareImagesWindow to the core silx.io.utils.get_data.

Closes #3852

Changelog:

• Added support of bare file from silx.io.utils.get_data with check_schemas=True

[t20100]

CI fails:

silx/io/utils.py:857: in <module>
    def get_data(url: Union[str,silx.io.url.DataUrl], check_schemas: bool=False):
E   AttributeError: module 'silx' has no attribute 'io'

depistes import silx.io.url...

🤷

[t20100]

This will make get_data simpler to use!

[vallsv]

Here is an update

[vallsv]

CI fails:

silx/io/utils.py:857: in <module>
    def get_data(url: Union[str,silx.io.url.DataUrl], check_schemas: bool=False):
E   AttributeError: module 'silx' has no attribute 'io'

depistes import silx.io.url...

shrug

I think it's because utils is imported by silx.io.__init__, so it was maybe creating weird behaviour depending on the way you was import this functions.

[t20100]

LGTM

[vallsv]

The PR was updated.