Allow autolevel to adjust fw_level_pitch_trim in NAV COURSE HOLD

[FinalFrag]

Current Behavior

Currently autolevel is only active in angle and horizon modes, together with some extra checks. See src/main/flight/pid.c line 1326

Desired Behavior

Since nav course hold is basically angle mode for the pitch axis, it would be nice to have autolevel active in this mode as well.

Suggested Solution

Add nav course hold to the check at src/main/flight/pid.c line 1326

Who does this impact? Who is this for?

Fixed wing pilots that use nav course hold instead of angle

[MrD-RC]

Interesting. I thought auto level would work in CRSH as it doesn't have alt hold.

I know what I'll be doing when I get home 🤣