Allocate PID 0x2057 for DroneerX6

[wszy2021]

This PR requests a pid.codes USB PID allocation for the DroneerX6 flight controller.

DroneerX6 is being upstreamed to PX4 in:
PX4/PX4-Autopilot#27745

PX4 reviewers requested that the board need VID/PID . DroneerX6 therefore needs a public and traceable USB VID/PID assignment for its PX4 bootloader and PX4 firmware USB CDC ACM interfaces.

Requested allocation:

VID: 0x1209
PID: 0x2057
Project: DroneerX6
Vendor/organization: droneer
Usage: PX4 bootloader and PX4 firmware USB CDC ACM device identification for the DroneerX6 flight controller.

[cnlohr]

I don't know how I could review this, being a PR instead of a normal project. It's not immediately evident from that link what hardware this is for, and what the exact software package is. Is there a better, in-git-three link you could use? See also #1232

[wszy2021]

I don't know how I could review this, being a PR instead of a normal project. It's not immediately evident from that link what hardware this is for, and what the exact software package is. Is there a better, in-git-three link you could use? See also #1232

how about this
flight controller：https://github.com/Droneer-uav/Droneerx6/blob/main/Droneer%20X6_01.png
Source code: https://github.com/wszy2021/PX4-Autopilot/tree/droneerv1
Licenced under BSD 3-Clause.