Revert "tear down Engine god object #4511"

This reverts commit 8d6a87ae21.

firmware/controllers/algo/fuel/dfco.cpp

@@ -1,5 +1,6 @@
 
-#include "pch_util.h"
+#include "engine_configuration.h"
+#include "sensor.h"
 
 #include "dfco.h"
 

firmware/pch/pch_util.h

@@ -1,18 +0,0 @@
-/**
- * just like pch.h just without full engine god object
- */
-
-#include <rusefi/interpolation.h>
-#include <rusefi/arrays.h>
-#include <rusefi/math.h>
-
-#include "engine_configuration.h"
-
-#include "expected.h"
-#include "error_handling.h"
-
-#include "engine_module.h"
-
-#include "sensor.h"
-
-#include "timer.h"