HFIRPowderReduction load backend

[dlcaballero16]

Description of work

This is to add loading logic mainly for MIDAS data. No new logic was added for WAND data as HFIRPowderReduction just calls LoadWAND when WAND data is supplied. Loading MIDAS data is similar to LoadWAND, however we do not worry about grouping for MIDAS. Also, masking values will need to be updated later once the actual instrument is built. The new logic for loading is not used yet as we still only have simulated MIDAS data.

EWM item 13307

To test:

Just make sure you can still perform reduction with both MIDAS and WAND data. See the test steps at #41055 for info on performing reduction.

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Reviewer

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• Is the code of an acceptable quality? (Code standards/GUI standards)
• Has a thorough functional test been performed? Do the changes handle unexpected input/situations?
• Are appropriately scoped unit and/or system tests provided?
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Gatekeeper

As per the gatekeeping guidelines:

• Has a thorough first line review been conducted, including functional testing?
• At a high-level, is the code quality sufficient?
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[github-actions]

Unit test results

2 863 tests   2 863 ✅  1h 56m 27s ⏱️
    1 suites      0 💤
    1 files        0 ❌

Results for commit 9581f5c.

[github-actions]

System test results

808 tests   792 ✅  2h 4m 49s ⏱️
 47 suites   16 💤
 47 files      0 ❌

Results for commit 9581f5c.