include multiple encoding errors in OPEN_DRONE_ID_ARM_STATUS message

[BluemarkInnovations]

In the current implementation, the check_parse fails on the first error whenit encounters bad data in one of the RID packets.

In this PR, the function will collect all bad data errors and include the packets that fail in in the ARM status error field. This is useful in case the data stream has multiple errors. For instance if the system message has an error and the operator ID too, the current implementation would only return that the system message fails.

[BluemarkInnovations]

Implemented a new PR with the requested changes.

• strncat is limited usable. The count applies to the source, not to the destination bytes.
• overflow of buffers is avoided.
• included Transport::arm_status_check function too.

[tridge]

needs a rebase, sorry

[BluemarkInnovations]

did a rebase and squashed the commits.

[BluemarkInnovations]

Seems to be ready for merge, see comment April 3.

[tridge]

@BluemarkInnovations i've cleaned up the string handling a bit