Add Wraith32 ESC Variant

[geosmall]

Summary

Add Wraith32 V1 Electronic Speed Control Variant based on STM32F051K6.

https://www.readytoflyquads.com/35a-wraith32-v11-32bit-blheli-esc

Program with SWD, see pic below.

[fpistm]

Hi @geosmall
I would not add another menu.
Could you add it to Generic flight controllers.
I think also move the sparky one to this menu.

[geosmall]

Ok, I restructured Sparky and Wraith within menus.

Wraith is an electronic speed controller (aka ESC, for controlling a BLDC motor, as opposed FC that controls overall drone) with no USB provisions. I've relocated Sparky V1 under Generic flight controller menu. I've also created a new 'Electronic speed controllers' menu. I eventually plan to add ST's B-G431B-ESC1 speed controller here https://www.st.com/en/evaluation-tools/b-g431b-esc1.html

[fpistm]

Thanks for the refactoring @geosmall
Could you also rebase on top to solve conflict with boards.txt.

[fpistm]

LGTM anyway a rebase on top of the master is required due to boards.txt conflict.

[geosmall]

Git rebase and merge are still new to me. I believe I may have screwed things up based on files changed.

Reading this now :) https://code.dblock.org/2015/08/31/getting-out-of-your-first-git-mess.html

[fpistm]

Well, it seems you've pull the master directly on top of your commits.
First best practice is to use a branch not the master for a PR. Then it is easier to track and also to rebase on top of the master.
Kept master clean and sync with the original repo is also easier.
Anyway Github seems OK to suash and merge. Let see if it is OK else I will clean up.