Add Stepper motor driver #147

Job	Run time
Build (ubuntu-latest)	32s
Build Website	26s
Build Examples (espressif/esp)	2m 10s
Build (windows-latest)	1m 13s
Dry Run Packaging	1m 41s
Build Examples (gigadevice/gd32)	2m 7s
Build (macos-latest)	26s
Check that stm32 generated code is up to date	39s
Build Examples (microchip/avr)	2m 11s
Build Examples (microchip/atsam)	1m 58s
Unit Test Ports (ubuntu-latest, gigadevice/gd32)	22s
Unit Test Regz (ubuntu-latest)	17s
Build Examples (nordic/nrf5x)	1m 56s
Unit Test Ports (ubuntu-latest, raspberrypi/rp2xxx)	28s
Unit Test UF2 (ubuntu-latest)	22s
Unit Test Regz (windows-latest)	1m 20s
Build Examples (nxp/lpc)	1m 56s
Unit Test Ports (ubuntu-latest, stmicro/stm32)	26s
Build Examples (stmicro/stm32)	26s
Unit Test UF2 (windows-latest)	1m 9s
Unit Test Regz (macos-latest)	28s
Unit Test Ports (windows-latest, gigadevice/gd32)	1m 0s
Build Examples (raspberrypi/rp2xxx)	2m 20s
Build Examples (wch/ch32v)	2m 11s
Unit Test UF2 (macos-latest)	33s
Unit Test Ports (windows-latest, raspberrypi/rp2xxx)	1m 23s
Unit Test Ports (windows-latest, stmicro/stm32)	1m 9s
Unit Test Ports (macos-latest, gigadevice/gd32)	24s
Unit Test Ports (macos-latest, raspberrypi/rp2xxx)	25s
Unit Test Ports (macos-latest, stmicro/stm32)	27s
	32m 25s

Provide feedback