AP_Scripting Quickshots

[twistedwings]

Script creates a Dronie, Rocket or Helix mission for Copter.
This is triggered by QGroundControl custom actions.

[IamPete1]

Nice! With a readme it should be in applets, examples are more for developers and applets are for users to use.

There are a couple of minor things picked up by the scripting CI test. You can see them by clicking on the failed test: https://github.com/ArduPilot/ardupilot/actions/runs/19682386849/job/56379343594?pr=31587

The tldr is that you should use ahrs:get_yaw_rad() in place of ahrs:get_yaw() and check that startWp is not nil before you use it.

[twistedwings]

This PR is intended to replace #30526.
The code was originally designed as an applet, but Peter Barker suggested an example.

I have no idea how to fix the failed checks.