Unlinker: Make zone files creators game dependent and in the unlinker project instead of the ObjWriting component

src/ZoneCommon/Game/T6/CommonT6.cpp

@@ -0,0 +1,18 @@
+#include "CommonT6.h"
+
+int CommonT6::Com_HashKey(const char* str, const int maxLen)
+{
+    if (str == nullptr)
+        return 0;
+
+    int hash = 0;
+    for (int i = 0; i < maxLen; i++)
+    {
+        if (str[i] == '\0')
+            break;
+
+        hash += str[i] * (0x77 + i);
+    }
+
+    return hash ^ ((hash ^ (hash >> 10)) >> 10);
+}

src/ZoneCommon/Game/T6/CommonT6.h

@@ -0,0 +1,7 @@
+#pragma once
+
+class CommonT6
+{
+public:
+    static int Com_HashKey(const char* str, int maxLen);
+};