U2023.12.03-1838: Automatic merge of T1.5.1-722-g01614a154 and 17 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 3b5a2fe3b: 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 #882 at 9df6e1ddc: Blueprint/train car operations UI window
- Pull request #885 at c81447bdd: feat: Add notifications to Menu
- Pull request #886 at b88f1d4b7: Scene viewer extension to TrackViewer
- Pull request #888 at d7daf626f: docs: Document player application model
- Pull request #890 at 39a9fa44c: Allow depart early
- 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
- Pull request #897 at 0a9d93913: feat: Improved system information collection
- Pull request #898 at e2713956c: Extra line with all the arguments for debugging purposes in logfile