CMake: Rebuild .cpp/.h files from .pyi on build

src/Base/CMakeLists.txt

@@ -315,6 +315,7 @@ SET(FreeCADBase_SRCS
     ${FreeCADBase_CPP_SRCS}
     ${FreeCADBase_HPP_SRCS}
     ${FreeCADBase_XML_SRCS}
+    ${FreeCADBase_Pyi_SRCS}
     ${FreeCADBase_UNITAPI_SRCS}
     PyTools.c
     PyTools.h

src/Gui/CMakeLists.txt

@@ -1362,6 +1362,7 @@ SET(FreeCADGui_SRCS
     ${FreeCADGui_connexion_HDRS}
     ${FreeCADGui_CPP_SRCS}
     ${FreeCADGui_XML_SRCS}
+    ${FreeCADGui_Pyi_SRCS}
     ${qsint_MOC_SRCS}
     ${Gui_QRC_SRCS}
     ${Gui_UIC_HDRS}