Fix automated test suite

[bainco]

Some quick fixes to get the automated test suite working again:

• Update GitHub-actions so that they...
  • install the sr and resource extensions
  • install r and the spatstat package on the build environment to support sr extensions
• Changes for sr extension:
  • Renames Code Examples/Extensions Example/sr/plotting.nlogox to Code Examples/Extensions Example/sr/Plotting.nlogox to match .gitignore entries (though perhaps this should be renamed to Plotting Example since all the other example models match that nomenclature)
  • Renotarize Example 1.nlogox in sr examples
  • Add Boxplot Example exemption from "no code in INFO TABs" test
• Add 1 questionable exemption to the ViewTests, specifically whether or not the computed view size matches the saved view size.
• Fixes for 3D Sample model: 3D Maze
  • manual preview needed
  • added manual preview but added preview commands for model checksums check
  • disabled buttons until ticks start

Note: there's a weird Graphics Environment exception popping up in the actions logs (Exception in thread "AWT-EventQueue-0" java.awt.HeadlessException). Not sure what that's all about but worth investigating.

[TheBizzle]

💪 Holy champ! What the what?! 🤯

[TheBizzle]

@bainco , very cool that you did this! 😎 🙇‍♂️

I fixed the befuddling text that you sidelined for the Interstitial Diffusion model. The logic behind the test is as follows:

A View widget's width is computable by (world-width * patch-size) + 4 pixels (and similar logic will apply for height). The 4 is for 2px of border on either side of the widget.

However, in the .nlogox file, the <view> tag contains all of that information, and then also gives a specific width number that it wants to be laid out with. If its stated width is not the same as its computed width (from the formula above), then there's something wrong with the information in that tag.

So, indeed, I think this test did actually catch a very minor bug. It seems that the widget's stated height and width were not factoring in the border. I've fixed it in this PR now, and everything looks uncontroversial to me, so I'll merge this and rebase your other PRs onto it.