Add submission # 6776

#6776

Author: ArduinoBot

registry.txt

@@ -8272,3 +8272,5 @@ https://github.com/RobTillaart/SMC.git|Contributed|SMC
 https://github.com/laddge/esp32-pasori-rcs300.git|Contributed|esp32-pasori-rcs300
 https://github.com/bastian2001/Fixed-Point-int.git|Contributed|Fixed_Point_int
 https://github.com/kodediy/kode_MAX31329.git|Contributed|kode_MAX31329
+https://github.com/gavinlyonsrepo/display16_LTSM.git|Contributed|display16_LTSM
+https://github.com/gavinlyonsrepo/ST7735_LTSM.git|Contributed|ST7735_LTSM