R4A_I2C: Add Robots-For-All I2C support library (#5055)

* Add LeeLeahy2/SdCardServer

* R4A_I2C: Add Robots-For-All I2C support library

Author: LeeLeahy2

repositories.txt

@@ -7304,3 +7304,4 @@ https://github.com/Zhentao-Lin/ESP32_WS2812_Lib
 https://github.com/stack-chan/stackchan-arduino
 https://github.com/adbancroft/avr-fast-div
 https://github.com/adbancroft/avr-fast-shift
+https://github.com/LeeLeahy2/R4A_I2C