Common: Add memory arena and page fault handler classes

src/common/page_fault_handler.h

@@ -0,0 +1,18 @@
+#pragma once
+#include "types.h"
+#include <functional>
+
+namespace Common::PageFaultHandler {
+enum class HandlerResult
+{
+  ContinueExecution,
+  ExecuteNextHandler,
+};
+
+using Callback = std::function<HandlerResult(void* exception_pc, void* fault_address, bool is_write)>;
+using Handle = void*;
+
+bool InstallHandler(void* owner, Callback callback);
+bool RemoveHandler(void* owner);
+
+} // namespace Common::PageFaultHandler