chore: move ZoneDefinitionWriter from Unlinker to ZoneCommon

src/ZoneCommon/Game/IW5/Zone/Definition/ZoneDefWriterIW5.cpp

@@ -0,0 +1,35 @@
+#include "ZoneDefWriterIW5.h"
+
+#include "Game/IW5/GameAssetPoolIW5.h"
+
+#include <cassert>
+
+using namespace IW5;
+
+void ZoneDefWriter::WriteMetaData(ZoneDefinitionOutputStream& stream, const Zone& zone) const {}
+
+void ZoneDefWriter::WriteContent(ZoneDefinitionOutputStream& stream, const Zone& zone) const
+{
+    const auto* pools = dynamic_cast<GameAssetPoolIW5*>(zone.m_pools.get());
+
+    assert(pools);
+    if (!pools)
+        return;
+
+    // Localized strings are all collected in one string file. So only add this to the zone file.
+    if (!pools->m_localize->m_asset_lookup.empty())
+        stream.WriteEntry(*pools->GetAssetTypeName(ASSET_TYPE_LOCALIZE_ENTRY), zone.m_name);
+
+    for (const auto& asset : *pools)
+    {
+        switch (asset->m_type)
+        {
+        case ASSET_TYPE_LOCALIZE_ENTRY:
+            break;
+
+        default:
+            stream.WriteEntry(*pools->GetAssetTypeName(asset->m_type), asset->m_name);
+            break;
+        }
+    }
+}