U2023.11.19-2007: Automatic merge of T1.5.1-687-gd279e384a and 18 pull requests

- Pull request #570 at c59c78802: Experimental glTF 2.0 support with PBR lighting
- Pull request #839 at d00beb983: First phase of https://blueprints.launchpad.net/or/+spec/additional-cruise-control-parameters
- Pull request #865 at 67014b77f: Dispatcher window improvements
- Pull request #874 at f8dbeab99: Dynamic brake controller refactoring
- Pull request #875 at 43bf33ed7: Bug fix for https://bugs.launchpad.net/or/+bug/2036346 Player train switching doesn't work with 3D cabs
- Pull request #876 at f92de7665: docs: add source for documents previously on website to source Documentation folder
- Pull request #878 at 25f5e0647: Implement Polach Adhesion
- Pull request #882 at d8a1c4d82: Blueprint/train car operations UI window
- Pull request #883 at edcc2dd59: SwitchPanel disconnect/connect handling
- Pull request #885 at c81447bdd: feat: Add notifications to Menu
- Pull request #886 at 8da48b32f: Scene viewer extension to TrackViewer
- Pull request #887 at 4665bda51: docs: Document projects, assemblies, namespaces
- Pull request #888 at d7daf626f: docs: Document player application model
- Pull request #889 at 43341cfb1: No speed update
- Pull request #892 at 1f5ba4c81: Signal Function OPP_SIG_ID_TRAINPATH
- Pull request #893 at bf8876b51: Signal errors
- Pull request #894 at 794fddf70: Correct Decrease Colour
- Pull request #896 at 5866028cf: First implementation of https://blueprints.launchpad.net/or/+spec/specific-sounds-for-ai-trains