add setupscreen - non working

MilliOhmMeter_FW/src/screen_main.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include "Arduino.h"
+#include "display_types.h"
+#include "display_draw.h"
+#include "display_buttons.h"
+
+void initDisplayMain(void);
+void ScreenMainDrawValues(void);
+void ScreenMainDrawButtons(void);
+e_displayState ScreenMainHandle(void);