It's still used in sdlog2, but once we'll depricate/remove sdlog2, we will
not remove this parameter as well.

Instead we use o_name to get the topic name. Now the topic names are not
upper case anymore in the log format. This makes it more consistent, eg.
if used as a nested topic

this is needed for nested topics.

We explicitly include the timestamp. This makes it possible to change it's
type later on.
This breaks the current ULog logging format.

if override is enabled then it should apply even if RAW_PWM is being
supplied by the FMU

this is needed to prevent inadvertent camera trigger when setting up a
port

under NuttX the argc in task_main_trampoline contains two arguments,
but on linux only one.

removed debugging message

changed to orb_publish_auto

resolve transfer errors

reformatting

implementing multi-topics