Rust nuttx binding change

[jnippula]

• Update rust_px4_nuttx lib: Relocate the rust bindings file generation output from source folder to cmake target build folder.
• Update boards/ssrc/common for dac_get/put support required by updated rust_px4_nuttx library.
• Cleanup debug print from uOrb interface

[jnippula]

SITL test fails, but that seems to be related to client-server connection. To make it more robust we should have local runner to verify both gzserver and px4_sitl containers are running in the very same machine (or virtual machine) to avoid complex/slow network connection between them. In CI docker containers may run different runners far away from each other and unreliable/slow network connection between them.

Or, those gzserver and px4_sitl should run inside the same docker container.