Add secure m2p loader with runtime key enforcement

src/PackLib/M2PackRuntimeKeyProvider.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include <array>
+
+#include "M2Pack.h"
+
+bool InitializeM2PackRuntimeKeyProvider(const char* commandLine);
+const std::array<uint8_t, M2PACK_KEY_SIZE>& GetM2PackActiveMasterKey();
+const std::array<uint8_t, M2PACK_PUBLIC_KEY_SIZE>& GetM2PackActivePublicKey();
+bool HasM2PackRuntimeMasterKey();
+bool HasM2PackRuntimeKeysForArchiveLoad();
+bool IsM2PackUsingRuntimeMasterKey();
+bool IsM2PackUsingRuntimePublicKey();