chore: fix annoying IW4 cross-type pointer reusage with dirty hack

The game reuses pointer across different types as long as bytes and size matches
This leads to non-pointer and pointer types being reused
To fix this loading code now handles block memory offsets by nulling
and block offsets to non-block data with pointing to raw block data
The behaviour only seems to realistically happen on nulled memory

src/ZoneLoading/Loading/Exception/InvalidLookupPositionException.cpp

@@ -0,0 +1,19 @@
+#include "InvalidLookupPositionException.h"
+
+#include <format>
+
+InvalidLookupPositionException::InvalidLookupPositionException(block_t block, size_t offset)
+    : m_block(block),
+      m_offset(offset)
+{
+}
+
+std::string InvalidLookupPositionException::DetailedMessage()
+{
+    return std::format("Zone tried to lookup at block {}, offset {} that was not recorded", m_block, m_offset);
+}
+
+char const* InvalidLookupPositionException::what() const noexcept
+{
+    return "Zone tried to lookup at zone offset that is not recorded";
+}

src/ZoneLoading/Loading/Exception/InvalidLookupPositionException.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include "LoadingException.h"
+#include "Zone/ZoneTypes.h"
+
+#include <cstdlib>
+
+class InvalidLookupPositionException final : public LoadingException
+{
+public:
+    InvalidLookupPositionException(block_t block, size_t offset);
+
+    std::string DetailedMessage() override;
+    char const* what() const noexcept override;
+
+private:
+    block_t m_block;
+    size_t m_offset;
+};