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/solvers/convex.h b/frc971/solvers/convex.h
index 140cac1..3de357c 100644
--- a/frc971/solvers/convex.h
+++ b/frc971/solvers/convex.h
@@ -4,11 +4,11 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-#include <Eigen/Dense>
 #include <iomanip>
 
 #include "absl/strings/str_join.h"
 #include "glog/logging.h"
+#include <Eigen/Dense>
 
 namespace frc971 {
 namespace solvers {