Add snippet for demonstrating options to programmatically create images

[HeikoKlare]

With the implementation of monitor-specific UI scaling on Windows, an SWT application does not have a static zoom anymore. The zoom will be specific for each shell and the monitor it is currently placed on. As a consequence, when programmatically creating an image, the target zoom at which it will be used is not known when creating the image anymore. Instead, it will depend on the context in which the image is used later on. There are multiple options how to achieve that such an image will still be rendered at the according zoom in a sharp way instead of rendering it at an arbitrary zoom and then scaling it in a blurry way. This snippet demonstrates these different options and also a common way for programmatic image creation that will lead to blurry results.

[github-actions]

Test Results

  118 files  ±0    118 suites  ±0   9m 39s ⏱️ -41s
4 583 tests ±0  4 547 ✅ ±0  36 💤 ±0  0 ❌ ±0 
  330 runs  ±0    307 ✅ ±0  23 💤 ±0  0 ❌ ±0 

Results for commit e57f0db. ± Comparison against base commit d262fb2.