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/frc971/vision/geometry_test.cc b/frc971/vision/geometry_test.cc
index 19e54c4..f34594c 100644
--- a/frc971/vision/geometry_test.cc
+++ b/frc971/vision/geometry_test.cc
@@ -2,10 +2,11 @@
 
 #include <cmath>
 
-#include "aos/util/math.h"
 #include "glog/logging.h"
 #include "gtest/gtest.h"
 
+#include "aos/util/math.h"
+
 namespace frc971::vision::testing {
 
 TEST(GeometryTest, SlopeInterceptLine) {