Add Arduino vid6606 library (#7285)

Arduino library for driving IC VID6608 and clones for Switec X25.168 miniature stepper motors with microstepping support

Author: petrows

repositories.txt

@@ -8613,3 +8613,4 @@ https://github.com/sfera-labs/arduino-lora-net
 https://github.com/sfera-labs/iono-mkr-lora-net
 https://github.com/sfera-labs/iono-rp-d16-arduino
 https://github.com/nedesico/ESP32_WiFi_Connect
+https://github.com/petrows/arduino-vid6608