Download widefield images

Hi hi!

Is there any way of downloading the widefield images as well using the python library?
We're using the following which downloads everything except the widefield images.
````
python -m shareloc_utils.batch_download --datasets=5534358 --output_dir="datasets" --file_patterns="*.smlm" --conversion --delimiter="," --extension=".csv"
````

Also, are widefield images always provided? In some cases (MT2D_160530_C2C3_1193K in https://shareloc.xyz/#/r/5510365?id=5510365) seems to be missing.

Thank you!

@IvanHCenalmor

Start with the shareloc_utils.batch_download entry point and its --file_patterns handling, using the command shown in the issue. Trace how dataset 5534358 files are selected and determine how widefield images are represented and whether their absence is expected. Done means the Python download flow handles available widefield images and clearly reports their availability.

Written by the indexing model from the issue text.