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/json_tokenizer.h b/aos/json_tokenizer.h
index dec2a32..892c575 100644
--- a/aos/json_tokenizer.h
+++ b/aos/json_tokenizer.h
@@ -4,6 +4,7 @@
 #include <string>
 #include <string_view>
 #include <vector>
+
 #include "flatbuffers/util.h"
 
 namespace aos {