Core: Fix applet includes using iwyu.

src/core/hle/kernel/process.h

@@ -6,6 +6,7 @@
 
 #include <bitset>
 #include <cstddef>
+#include <memory>
 #include <string>
 
 #include <boost/container/static_vector.hpp>

src/core/hle/kernel/shared_memory.h

@@ -4,9 +4,12 @@
 
 #pragma once
 
+#include <string>
+
 #include "common/common_types.h"
 
 #include "core/hle/kernel/kernel.h"
+#include "core/hle/result.h"
 
 namespace Kernel {