[idd] helper: add mode edit controls

idd/LGIddHelper/CEditWidget.h

@@ -0,0 +1,14 @@
+#pragma once
+#include "CWidget.h"
+#include <string>
+
+class CEditWidget : public CWidget
+{
+public:
+  CEditWidget(DWORD style, HWND parent);
+  std::wstring getValue();
+  int getNumericValue();
+
+  void setValue(const std::wstring &value);
+  void setNumericValue(int value);
+};