[rosidl_runtime_c] Add move semantics support

[zhangyi1357]

Feature request

Feature Description

Currently, rosidl_runtime_c implements copy functions for various basic types, but does not consider move semantics-related APIs. Theoretically, providing move-related APIs could significantly improve the convenience and performance of applications built upon it.
For example, I am currently implementing some interoperability with other frameworks based on rosidl_typesupport_introspection_c's typesupport, but the lack of move semantics forces me to implement the relevant move functionality within my framework, which is not elegant.

Implementation Considerations

I have carefully reviewed the implementation in rosidl_runtime_c. The move method should not differ significantly from the copy method; only minor adjustments are needed to address the semantics.
If the discussion concludes that this feature is necessary, I will begin implementation in the coming weeks.