MSVC: Add missing PreCompiled.h includes

Author: chennes

src/App/Services.cpp

@@ -21,6 +21,8 @@
  *                                                                          *
  ***************************************************************************/
 
+#include "PreCompiled.h"
+
 #include "Services.h"
 
 std::optional<Base::Vector3d>

src/Mod/Part/App/Services.cpp

@@ -21,6 +21,8 @@
  *                                                                          *
  ***************************************************************************/
 
+#include "PreCompiled.h"
+
 #include "Services.h"
 
 AttacherSubObjectPlacement::AttacherSubObjectPlacement()