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/y2020/vision/extrinsics_calibration.cc b/y2020/vision/extrinsics_calibration.cc
index d9e13b3..334de0b 100644
--- a/y2020/vision/extrinsics_calibration.cc
+++ b/y2020/vision/extrinsics_calibration.cc
@@ -3,6 +3,7 @@
 #include "Eigen/Dense"
 #include "Eigen/Geometry"
 #include "absl/strings/str_format.h"
+
 #include "aos/events/logging/log_reader.h"
 #include "aos/init.h"
 #include "aos/network/team_number.h"