Arduplane: Auto Tune Yaw, L1 nav, etc.

Hello,

I was wondering what the current progress is on the development and refinement of the Auto Tune function and if auto tune will soon be added for Yaw, L1 nav, and other important control loops that are currently manually tuned?

Thank you

The issue names Auto Tune, yaw, L1 navigation, and manually tuned control loops but gives no files, tests, or entry points. Start by locating the existing Auto Tune implementation and the tuning code for these control loops. Done requires a defined scope, implementation, and validation that the requested loops can be tuned automatically.

Written by the indexing model from the issue text.