zenoh: api: encoding: Add MAVLink

[patrickelectric]

MAVLink is a messaging protocol for communicating with drones (and between onboard drone components).

It would be great for the drone industry (and zenoh adoption) to have the MAVLink protocol as a native encoding option in Zenoh.
I'm working with MAVLink/ArduPilot/BlueOS/PX4 and zenoh integration in the ecosystem, this patch would move things forward exceptionally.

For more information:

• https://mavlink.io/en/
• https://github.com/mavlink/mavlink
• https://ardupilot.org/dev/docs/mavlink-commands.html
• https://docs.px4.io/main/en/mavlink/#mavlink-overview
  • That already has a initial zenoh integration (https://github.com/PX4/PX4-Autopilot/tree/3e425210e0a625539268709c3ca8b670014785f2/src/modules/zenoh)

[github-actions]

PR missing one of the required labels: {'breaking-change', 'bug', 'new feature', 'internal', 'dependencies', 'enhancement', 'documentation', 'ci', 'api-sync'}

[github-actions]

PR missing one of the required labels: {'new feature', 'bug', 'api-sync', 'internal', 'dependencies', 'ci', 'documentation', 'enhancement', 'breaking-change'}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.90%. Comparing base (215f18f) to head (d870ed7).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2322      +/-   ##
==========================================
+ Coverage   72.85%   72.90%   +0.04%     
==========================================
  Files         388      388              
  Lines       62194    62194              
==========================================
+ Hits        45313    45343      +30     
+ Misses      16881    16851      -30     

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