Add AM2315C library (#2475)

Author: RobTillaart

repositories.txt

@@ -3504,6 +3504,7 @@ https://github.com/RobTillaart/ADS1X15
 https://github.com/RobTillaart/ADT7470
 https://github.com/RobTillaart/AGS02MA
 https://github.com/RobTillaart/AM2315
+https://github.com/RobTillaart/AM2315C
 https://github.com/RobTillaart/AM232X
 https://github.com/RobTillaart/AnalogKeypad
 https://github.com/RobTillaart/AnalogPin