Add .clang-format to repo for automated style

Add .clang-format to repo for automated style.  A consistent style
across Openbmc makes the code easier to read and edit.

Change-Id: I7c09792d2482f0be3e01776804347700f3e3e651
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/parser.hpp b/parser.hpp
index 04949f9..e131c46 100644
--- a/parser.hpp
+++ b/parser.hpp
@@ -1,8 +1,9 @@
 #pragma once
 
-#include <vector>
 #include "store.hpp"
 
+#include <vector>
+
 namespace openpower
 {
 namespace vpd