Fix documentation on coordinate systems and transformations

[thomassedlmayer]

This PR fixes some issues with the documentation on coordinate systems and transformations.

• Added section on the definition of "host vehicle coordinate system" to the chapter on coordinate systems used for OSI. This (host) vehicle coordinate system is referenced in many places in OSI but never explained anywhere in the documentation.
• Replaced Figure 10 by another image from the OSI class reference docs (MovingObject) because physical sensor coordinate system is not with respect to center of bounding box but with respect to center of rear axle.
• Fixed minor bugs (typos, copy/paste errors)
• MovingObject Detailed Description:
  • Fixed reference to MovingObject::vehicle_extension which was probably replaced by MovingObject::vehicle_attributes and MovingObject::vehicle_classification.
  • Aligned image scale

I've tested the Antora documentation build locally.

Feel free to add any thoughts.

Checklist:

• [X] My suggestion follows the style and contributors guidelines.
• [X] I have taken care about the message documentation and the fields and enums documentation.
• [X] I have done the DCO signoff.
• [X] My changes generate no errors when passing CI tests.
• [X] I have successfully implemented and tested my fix/feature locally.
• [X] Appropriate reviewer(s) are assigned.

[thempen]

Harmonization group meeting result:

• PR accepted to improve the existing documentation for the coordinate system naming.
• The description and definition of coordinate systems should be reworked for 4.0. There are multiple coordinate systems not mentioned yet and additional problems, e.g. the dynamic definition of bounding box.

[pmai]

CCB 2023-06-12: Merge as-is.