Sasdata 8: Move example data to sasdata package

[krzywon]

Description

Example data are removed from the sasview/sasview repo, and, instead, are copied from the sasdata build. This is the SasView corollary to SasView/sasdata#49 which is now merged.

How Has This Been Tested?

CI completes successfully

Review Checklist (please remove items if they don't apply):

• Code has been reviewed
• Functionality has been tested
• Windows installer (GH artifact) has been tested (installed and worked)
• MacOSX installer (GH artifact) has been tested (installed and worked)
• User documentation is available and complete (if required)
• Developers documentation is available and complete (if required)
• The introduced changes comply with SasView license (BSD 3-Clause)

[krzywon]

Question from @lucas-wilkins: will the new sasdata import work when the data is integrated with sasview?

[llimeht]

Moving the files at CI time reminds me of #2421. Requiring multiple projects be checked out in a particular directory structure and then moving files between them at test and build time is an interesting symptom.

[smk78]

Can I suggest you merge SasView/sasdata#58 first so you get the latest copy of the example data and updated testdata_help.

[butlerpd]

I'm not sure I follow @smk78 comment? Presumably this PR removes the data files that are now already in sasdata main? This would be independent of any new data files being added to sasdata would it not? or am I misunderstanding the PR?

Either way this needs to be merged into main as well as the 6.0.0_release branch somehow.

[butlerpd]

It was agreed at Tuesday's call that it was ready to merge but apparently nobody clicked the approve button. Doing so now