Precision Landing devices expanded to include ULS-XCopter-G2 device

[rmackay9]

our Precision Landing section was built around the IR-Lock but there are a number of devices available now

This one in particular was apparently purchased and used by @tridge although we should check with him if it worked reliably (see funding proposal here)

• https://store.uavlas.com/products/uls-xcopter-g2-landing-kit-uls-xcopter-tx-g2-uls-xcopter-rx-g2

We've got other devices that are known to work as well including the OpenMV camera

[Hwurzburg]

@tridge any input?