AP_Scripting: enable AP_Scheduler for CubeOrange-periph-heavy

... we use the scehduler in AP_Motors, which is compiled when making heavy-periph

Author: peterbarker

libraries/AP_Scripting/generator/src/main.c

@@ -2927,6 +2927,9 @@ int main(int argc, char **argv) {
 
   // for set_and_print_new_error_message deprecate warning
   fprintf(source, "#include <AP_Scripting/lua_scripts.h>\n");
+  fprintf(source, "\n");
+  // the generated source uses the Scehduler singleton:
+  fprintf(source, "#include <AP_Scheduler/AP_Scheduler.h>\n");
 
   fprintf(source, "extern const AP_HAL::HAL& hal;\n");