move types.hpp to ipmid/types.hpp for export

types.hpp is required by utility.hpp, which is exported, so it needs to
be exported as well. This moves it to the include/libipmid directory,
changes the Makefile to export it, and changes all the files that
include it so it can be found in the right place.

Change-Id: I30ec365446e4de466c266ec4faa327478460ec05
Signed-off-by: Vernon Mauery <vernon.mauery@linux.intel.com>
diff --git a/selutility.hpp b/selutility.hpp
index 4e2855a..806f937 100644
--- a/selutility.hpp
+++ b/selutility.hpp
@@ -1,9 +1,8 @@
 #pragma once
 
-#include "types.hpp"
-
 #include <chrono>
 #include <cstdint>
+#include <ipmid/types.hpp>
 #include <sdbusplus/server.hpp>
 
 namespace ipmi