Allow app consumers to set h5py options

[loichuder]

We are using h5grove (in our fastapi project) to serving the h5 file to our frontend, just wondering is it possible to pass h5py optins like swmr=True with the endpoint? cause now the get_content_from_file and get_list_of_paths do accept the h5py options, but we can't pass in from the endpoint or the settings.

Originally posted by @Tinanuaa in #73 (comment)

[loichuder]

Valid point.

I reckon having general settings for h5py in the app would make more sense than setting it at each request.

[Tinanuaa]

I agree, I would prefer to have some general settings like swmr=True that we can set through the fastapi_utils.settings