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/uuid.h b/aos/uuid.h
index aabca37..1b63ac3 100644
--- a/aos/uuid.h
+++ b/aos/uuid.h
@@ -6,9 +6,10 @@
 #include <string>
 
 #include "absl/types/span.h"
-#include "aos/thread_local.h"
 #include "flatbuffers/flatbuffers.h"
 
+#include "aos/thread_local.h"
+
 namespace aos {
 
 // Class to generate and hold a UUID.