This is the best I managed to get https://forum.sector3studios.com/index.php?threads/customizing-track-cameras.11213/ I don't think it's possible to achieve same customization as in CamTool for AC by making third party app. Maybe once we move to different engine
For now, the current camera movements are the best we can get with the camera editor. We're using this editor internally only because it needs a developer version of game in order to work. Afaik, there's no plan to improve the editor or add some TV cameras features, also because the editor is quite sensitive and breaks easily when we touch its internal code.