[HAT] Define mundatory field LCSC

Author: AksonovSergei

docs/platform/rpi_power_hat/requirements.md

@@ -12,4 +12,5 @@
 10. The board should have serial interface and I2C interface connectors for connecting a GPS sensor with a compass. Connector types: JST PH.
 11. The board should have a green LED connected to +5V to indicate the presence of power.
 12. The printed circuit board should be designed using KiCad EDA (https://www.kicad.org/).
-13. All components of the board should be available for order on the website: https://www.lcsc.com/
+13. All components of the board should be available for order on the website: https://www.lcsc.com/
+14. All KiCAD library components shoul have field ``LCSC`` that is used to make order.