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/test/store/store.cpp b/test/store/store.cpp
index 32b403c..4c83ba7 100644
--- a/test/store/store.cpp
+++ b/test/store/store.cpp
@@ -1,9 +1,11 @@
+#include "store.hpp"
+
+#include "defines.hpp"
+
 #include <cassert>
 #include <string>
 #include <unordered_map>
 #include <utility>
-#include "defines.hpp"
-#include "store.hpp"
 
 void runTests()
 {