build: autotools-based install of headers

Change-Id: Ie54f22002bc4fb382770c8cab606642f6072ffae
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..07076d7
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,16 @@
+nobase_include_HEADERS = \
+	mapbox/recursive_wrapper.hpp \
+	mapbox/variant.hpp \
+	sdbusplus/bus.hpp \
+	sdbusplus/message.hpp \
+	sdbusplus/message/append.hpp \
+	sdbusplus/message/read.hpp \
+	sdbusplus/server.hpp \
+	sdbusplus/server/interface.hpp \
+	sdbusplus/server/manager.hpp \
+	sdbusplus/server/match.hpp \
+	sdbusplus/server/object.hpp \
+	sdbusplus/slot.hpp \
+	sdbusplus/utility/tuple_to_array.hpp \
+	sdbusplus/utility/type_traits.hpp \
+	sdbusplus/vtable.hpp