How to Install the STM32 USB Bootloader, New Version! (Blue Pill F103C8T6)

A year and a half later and we have a great new bootloader version. It works swimmingly and I am happy to be able to share it with the world!
Additional Board Manager URL:
github.com/stm...
STM32 Cube Programmer:
www.st.com/en/...
HID Bootloader:
github.com/Ser...
How to tell if your board is low, medium, or high density:
stm32duinoforu...
STM32 "Blue Pill" Discord:
/ discord