Add sans in loader

[celinedurniak]

The csv loader for DREAM was changed by adding support for the SANS detector.

New test data can be found at https://project.esss.dk/nextcloud/index.php/s/i2iD2M2EHD4rRnM
It corresponds to the following case:

• sample: Si powder
• High flux configuration of the instrument
• Detectors: mantle with 7 modules, endcap backward and forward with 13 modules and complete layouts for High-resolution and SANS detectors

[jl-wynen]

Thanks! I will add the new test data tomorrow

[jl-wynen]

@celinedurniak I fixed the broken test, added more tests using the new file, and switched to using this file in the instrument view docs. Can you have a look if this all makes sense? (You have a 👍 for your changes.)

[nvaytet]

@celinedurniak gentle reminder about this ;-)

[celinedurniak]

For me, this pull request can be merged.