C2INAV — Only top-level attributes can be declared as keys for DDS topic types

Attributes of offset_report_type and navigation_report_type are declared with the key stereotype. However in the DDS PSM these attributes of these abstract type are encapsulated into struct members for each level inheritance so that the key attributes are no longer top level in the concrete topic types.

Inline attributes from abstract base types into topic type specialisations

Inline the attributes from navigation_report_type and offset_report_type into the types that are derived from them
attitude_rotation_type,
attitude_rotation_rate_type,
position_offset_type,
velocity_offset_type
(both base types)
depth_report_type,
own_position_type,
own_velocity_type,
own_acceleration_type
(navigation_report_type_only)