Publish roadmap

[Robotics010]

It would be useful to have a roadmap, which helps to understand next to-be-developed features. I'm trying to prioritize features from basically required functionality, then features that are required from a user feedback and then other features. Here is an ordered list of it from now:

1. (done) Fix/calibrate control of selected for demo carla.tesla.model3 vehicle, provide outstanding vehicle status and control command values
2. Provide traffic_light data, check that camera perception works as expected
3. Add ci/cd build stage
4. Add dockerized version in tutorial
5. Move getting started tutorial to autoware documentation
6. Make synchronous mode wait for autoware response
7. Try to add humble support with the most easy way
8. Prepare scenario usage tutorial
9. Multi ego vehicle setup
10. Different sensor_kit and it's calibration tutorial
11. Provide ground truth (from carla) localization, perception

Any feedback is welcome as always.