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/control_loops/aiming/aiming.h b/frc971/control_loops/aiming/aiming.h
index 47fd06a..c743fe8 100644
--- a/frc971/control_loops/aiming/aiming.h
+++ b/frc971/control_loops/aiming/aiming.h
@@ -58,5 +58,5 @@
 };
 
 TurretGoal AimerGoal(const ShotConfig &config, const RobotState &state);
-}
+}  // namespace frc971::control_loops::aiming
 #endif  // FRC971_CONTROL_LOOPS_AIMING_AIMING_H_