Improving Graphical Editor Appearance on Fractional Native Scaling

The default setting of the Eclipse Platform for swt.autoScaling is only
only using full integer scale values. For fractional native scaling
settings (e.g., 125%, 175%) this lead to problems as the graphical
elements where not scaled but the text was always scaled with native
scaling.

This commit is now adding the exact as swt.autoScaling parameter as this
greatly improves drawing aspect ratios on screen settings with
fractional scaling settings.

plugins/org.eclipse.fordiac.ide.product/org.eclipse.fordiac.ide.product

@@ -23,6 +23,7 @@
 -Dorg.eclipse.swt.graphics.Resource.reportNonDisposed=true
 -Declipse.e4.inject.javax.warning=false
 -Dorg.slf4j.simpleLogger.defaultLogLevel=off
+-Dswt.autoScale=exact
 -XX:+UseG1GC
 -XX:+UseStringDeduplication
 -Dosgi.dataAreaRequiresExplicitInit=true