[Installer] Restart explorer.exe programatically after successful update (#4215)

* Restart explorer.exe programatically after successful update

* Move RestartManager related code into common

* Add newline at the end of files

* Note that explorer.exe should not be localized string

src/common/RestartManagement.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include <string>
+
+void RestartProcess(const std::wstring& processName);