Run clang-format on the entire repo

This patch clang-formats the entire repo. Third-party code is
excluded.

I needed to fix up the .clang-format file so that all the header
includes are ordered properly. I could have sworn that it used to work
without the extra modification, but I guess not.

Signed-off-by: Philipp Schrader <philipp.schrader@gmail.com>
Change-Id: I64bb9f2c795401393f9dfe2fefc4f04cb36b52f6
diff --git a/aos/flatbuffer_merge.h b/aos/flatbuffer_merge.h
index 4d2d395..c167464 100644
--- a/aos/flatbuffer_merge.h
+++ b/aos/flatbuffer_merge.h
@@ -4,9 +4,10 @@
 #include <cstddef>
 #include <string>
 
-#include "aos/flatbuffers.h"
 #include "flatbuffers/flatbuffers.h"
 
+#include "aos/flatbuffers.h"
+
 namespace aos {
 
 // Merges 2 flat buffers with the provided type table into the builder.  Returns