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/y2023/vision/vision_util.h b/y2023/vision/vision_util.h
index 79f5c92..1f4d099 100644
--- a/y2023/vision/vision_util.h
+++ b/y2023/vision/vision_util.h
@@ -3,6 +3,7 @@
 #include <string_view>
 
 #include "opencv2/imgproc.hpp"
+
 #include "y2023/constants/constants_generated.h"
 
 namespace y2023::vision {