[WDF] Add Windows Driver Framework files

Takern from Microsoft GitHub repo:
d9c6040fe9

Licensed under MIT

sdk/lib/drivers/wdf/shared/inc/private/common/fxdevicecallbacks.hpp

@@ -0,0 +1,63 @@
+/*++
+
+Copyright (c) Microsoft Corporation
+
+Module Name:
+
+    FxDeviceCallbacks.h
+
+Abstract:
+
+    This module implements the FxDevice object callbacks
+
+Author:
+
+
+
+
+Environment:
+
+    Both kernel and user mode
+
+Revision History:
+
+--*/
+
+#ifndef _FXDEVICECALLBACKS_H_
+#define _FXDEVICECALLBACKS_H_
+
+//
+// These delegates are in a seperate file
+//
+
+//
+// DrvDeviceInitialize callback delegate
+//
+class FxIoInCallerContext : public FxCallback {
+
+public:
+    PFN_WDF_IO_IN_CALLER_CONTEXT m_Method;
+
+    FxIoInCallerContext(
+        __in PFX_DRIVER_GLOBALS FxDriverGlobals
+        ) : FxCallback(FxDriverGlobals), m_Method(NULL)
+    {
+    }
+
+    VOID
+    Invoke(
+        __in WDFDEVICE Device,
+        __in WDFREQUEST Request
+        )
+    {
+        if (m_Method != NULL) {
+            CallbackStart();
+            m_Method(Device, Request);
+            CallbackEnd();
+        }
+    }
+};
+
+
+
+#endif // _FXDEVICECALLBACKS_H_