[WDF] Add Windows Driver Framework files

Takern from Microsoft GitHub repo:
d9c6040fe9

Licensed under MIT

sdk/lib/drivers/wdf/shared/object/fxuserobject.cpp

@@ -0,0 +1,106 @@
+/*++
+
+Copyright (c) Microsoft Corporation
+
+Module Name:
+
+    FxUserObject.cpp
+
+Abstract:
+
+    This module implements the user object that device
+    driver writers can use to take advantage of the
+    driver frameworks infrastructure.
+
+Author:
+
+
+
+
+Environment:
+
+    Both kernel and user mode
+
+Revision History:
+
+
+
+
+
+
+--*/
+
+#include "fxobjectpch.hpp"
+
+#include "FxUserObject.hpp"
+
+// Tracing support
+extern "C" {
+#if defined(EVENT_TRACING)
+#include "FxUserObject.tmh"
+#endif
+}
+
+_Must_inspect_result_
+NTSTATUS
+FxUserObject::_Create(
+    __in     PFX_DRIVER_GLOBALS FxDriverGlobals,
+    __in_opt PWDF_OBJECT_ATTRIBUTES Attributes,
+    __out    FxUserObject** pUserObject
+    )
+{
+    FxUserObject* pObject = NULL;
+    NTSTATUS status;
+    USHORT wrapperSize = 0;
+    WDFOBJECT handle;
+
+#ifdef INLINE_WRAPPER_ALLOCATION
+#if FX_CORE_MODE==FX_CORE_USER_MODE
+    wrapperSize = FxUserObject::GetWrapperSize();
+#endif
+#endif
+
+    pObject = new(FxDriverGlobals, Attributes, wrapperSize)
+        FxUserObject(FxDriverGlobals);
+
+
+    if (pObject == NULL) {
+        DoTraceLevelMessage(FxDriverGlobals, TRACE_LEVEL_ERROR, TRACINGOBJECT,
+                            "Memory allocation failed");
+        return STATUS_INSUFFICIENT_RESOURCES;
+    }
+
+    status = pObject->Commit(Attributes, &handle);
+
+    if (!NT_SUCCESS(status)) {
+        DoTraceLevelMessage(FxDriverGlobals, TRACE_LEVEL_ERROR,
+                            TRACINGOBJECT,
+                            "FxObject::Commit failed %!STATUS!", status);
+    }
+
+    if (NT_SUCCESS(status)) {
+        *pUserObject = pObject;
+    }
+    else {
+        pObject->DeleteFromFailedCreate();
+    }
+
+    return status;
+}
+
+//
+// Public constructors
+//
+
+FxUserObject::FxUserObject(
+    __in PFX_DRIVER_GLOBALS FxDriverGlobals
+    ) :
+#ifdef INLINE_WRAPPER_ALLOCATION
+    FxNonPagedObject(FX_TYPE_USEROBJECT, sizeof(FxUserObject) + GetWrapperSize(), FxDriverGlobals)
+#else
+    FxNonPagedObject(FX_TYPE_USEROBJECT, sizeof(FxUserObject), FxDriverGlobals)
+#endif
+{
+    return;
+}
+