* merge-bin.py script

platformio.ini

@@ -26,6 +26,7 @@ build_src_filter = +<*.cpp> +<helpers/*.cpp>
 extends = arduino_base
 platform = espressif32
 monitor_filters = esp32_exception_decoder
+extra_scripts = merge-bin.py
 build_src_filter = ${arduino_base.build_src_filter}
 
 [Heltec_stick_lite]