Add ContinuousStepper_Generic library (#2412)

### Initial Releases v1.0.0

1. Initial coding to use PWM to control continuous Stepper Motor. Check [Using PWM to step a stepper driver #16](https://github.com/khoih-prog/ContinuousStepper_Generic/issues/16)
2. Use `allman astyle` and add `utils`

Author: khoih-prog

repositories.txt

@@ -5540,3 +5540,4 @@ https://github.com/stoneroweast/HoldButton
 https://github.com/jpconstantineau/BlueMicro_RP2040_Arduino_Library.git
 https://github.com/Naguissa/uUnixDate
 https://github.com/sparkfun/SparkFun_STTS22H_Arduino_Library
+https://github.com/khoih-prog/ContinuousStepper_Generic