Deprecate CPP typesupport

[pablogs9]

Signed-off-by: Pablo Garrido [email protected]

[codecov-commenter]

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[Acuadros95]

This implies modifications on rmw_microxrcedds. Example: https://github.com/micro-ROS/rmw_microxrcedds/blob/galactic/rmw_microxrcedds_c/src/rmw_publisher.c#L26-L27

[k7g03z]

@pablogs9 Can you provide some background why the type support for CPP is being deprecated?

We are looking into Micro-ROS as a microcontroller solution together with rclcpp and found this MR. Can you tell us more?

[pablogs9]

Hello, @k7g03z micro-ROS targets pure C environments in order to be as portable as possible. That's why we do not need this CPP type support (in fact it was developed, but never used). Also we do not officially support RCLCPP because the portability issues.