Rework complex distance, camera shot count calc for better back compat

Save camera shots and complex distance in plan file so that values are valid when reloading

Should not rebuild transects for newer file formats where mission items are stored in file

Should not rebuild transects when loading. Mission items are already stored in file

Relevant changes: fixes for u-blox F9P base station.

Fix broken NO_SERIAL_LINK build

Waypoints only mode tweaks

Hide ROI

Show camera section in waypoints only mode

Fix write storage permission problem

Fix GStreamer Debug positioning

Add internal error case

Default to ThrottleModeDownZero

Remove Split Polygon support since it causes crashes

Support for new AltitudeFactTextField

Make settingsGroup public for custom build overrides

Support STATUSTEXT_LONG

Move valueSetIsDistance to Fact so custom builds can override

Remove incorrect comment

Fix startup crash on initial font change signalling qgc reboot required