Simulator: Compensate scale error, not just message drops. This makes the whole simulation a lot more stable

* msg: add reporting of multi rotor drag fusion

* ekf2: add reporting of multi rotor drag fusion

* ekf2: Add parameters required to tune multi-rotor wind estimation

* ekf2: Add correction for static pressure position error

* ekf2: Use correct air density for position error corrections

* ekf2: fix parameter documentation error

* ekf2: Add separate forward and reverse position error correction factors

* ekf2: Fix formatting and parameter descriptions

* ekf2: Improve comments

* WIP: github issue template

* Update issue_template.md