Add PicoBricks Library (#6186)

* Update repositories.txt

* Update repositories.txt

Author: AtakanOztrk

repositories.txt

@@ -7950,3 +7950,4 @@ https://github.com/IsraEB/esp32cam
 http://github.com/codewitch-honey-crisis/htcw_pool
 https://github.com/rjsachse/ESP32-SpeexDSP
 https://github.com/kingsmen732/Robot-face---sh1106-screen
+https://github.com/Robotistan/PicoBricks-for-RPico