Set up proper test notebook for CameraCalibration chapter

[Mario Theers]

The CameraCalibration currently has a notebook for tests, but this is not the form the students should see.

• There should be text explaining stuff
• We need the google colab header at the beginning like in the other test notebooks
• From the book chapter I have the understanding that the video shall be fed to the CameraCalibrator? Then this needs to be added in this notebook. Also the student needs to know what values for pitch and yaw they should expect to get.

[Mario Theers]

Remaining work:

Improve code/tests/camera_calibration/test_calibrated_lane_detector.ipynb

• (Optional): Have separate tests for get_intersection and get_py_from_vp that are independent of any lane detection results.