MacOSX/Linux port

There are a lot of people wishing for both the MacOSX and Linux ports to happen.

Most problems in the past were related to UI components using the SWT-AWT bridge.

The UI components that employ SWT-AWT bridge are:

• diagram editor
• Dependencies structure tab
• Trend view
• Symbol library

UI components that rely on Windows-only native parts:

• Structure view
  • Relies on DOT from GraphViz, more specifically on https://gitlab.simantics.org/simantics/platform/-/tree/master/bundles/org.simantics.graphviz currently only works with Windows.
  • Also note simantics/platform#730 and simantics/platform#581