Added Sketch source path to the include path

This allow to check thanks '#if __has_include("xxxxx.h")'
if user adds a specific header file.
Ex: Used by STM32duino FreeRTOS to include user FreeRTOSConfig.h
instead of the FreeRTOSConfig_Default.h

Signed-off-by: Frederic.Pillon <[email protected]>

Author: fpistm

platform.txt

@@ -9,7 +9,7 @@ version=1.0.0
 
 # STM compile variables
 # ----------------------
-compiler.stm.extra_include="-I{build.core.path}/avr" "-I{build.core.path}/stm32" "-I{build.system.path}/Drivers/{build.series}_HAL_Driver/Inc/" "-I{build.system.path}/Drivers/{build.series}_HAL_Driver/Src/" "-I{build.system.path}/{build.series}/" "-I{build.variant.path}/usb" "-I{build.variant.path}/Ethernet" "-I{build.system.path}/Middlewares/ST/STM32_USB_Device_Library/Core/Inc" "-I{build.system.path}/Middlewares/ST/STM32_USB_Device_Library/Core/Src"
+compiler.stm.extra_include="-I{build.source.path}" "-I{build.core.path}/avr" "-I{build.core.path}/stm32" "-I{build.system.path}/Drivers/{build.series}_HAL_Driver/Inc/" "-I{build.system.path}/Drivers/{build.series}_HAL_Driver/Src/" "-I{build.system.path}/{build.series}/" "-I{build.variant.path}/usb" "-I{build.variant.path}/Ethernet" "-I{build.system.path}/Middlewares/ST/STM32_USB_Device_Library/Core/Inc" "-I{build.system.path}/Middlewares/ST/STM32_USB_Device_Library/Core/Src"
 
 # "-I{build.system.path}/Drivers/BSP/Components" "-I{build.system.path}/Middlewares/Third_Party/FatFs/src"  "-I{build.system.path}/Middlewares/ST/STM32_USB_Device_Library/Core/Src" "-I{build.system.path}/Middlewares/ST/STM32_USB_Device_Library/Class/HID/Inc"