Add ZoneWriting basis

src/ZoneWriting/Writing/IWritingStep.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include "Writing/ZoneWriter.h"
+#include "IWritingStream.h"
+
+class ZoneWriter;
+
+class IWritingStep
+{
+public:
+    IWritingStep() = default;
+    virtual ~IWritingStep() = default;
+    IWritingStep(const IWritingStep& other) = default;
+    IWritingStep(IWritingStep&& other) noexcept = default;
+    IWritingStep& operator=(const IWritingStep& other) = default;
+    IWritingStep& operator=(IWritingStep&& other) noexcept = default;
+
+    virtual void PerformStep(ZoneWriter* zoneWriter, IWritingStream* stream) = 0;
+};