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_test.cc b/aos/flatbuffer_merge_test.cc
index 89cecdb..4c59879 100644
--- a/aos/flatbuffer_merge_test.cc
+++ b/aos/flatbuffer_merge_test.cc
@@ -3,11 +3,12 @@
 #include <string_view>
 
 #include "absl/strings/escaping.h"
-#include "aos/json_to_flatbuffer.h"
-#include "aos/json_to_flatbuffer_generated.h"
 #include "flatbuffers/minireflect.h"
 #include "gtest/gtest.h"
 
+#include "aos/json_to_flatbuffer.h"
+#include "aos/json_to_flatbuffer_generated.h"
+
 namespace aos {
 namespace testing {