[wpimath] Move MathShared.h to wpimath/ directory

It was confusing to have it in math/ when the std <math> header exists.

wpimath/src/main/native/include/frc/LinearFilter.h

@@ -15,8 +15,8 @@
 #include <wpi/ArrayRef.h>
 #include <wpi/circular_buffer.h>
 
-#include "math/MathShared.h"
 #include "units/time.h"
+#include "wpimath/MathShared.h"
 
 namespace frc {
 

wpimath/src/main/native/include/frc/kinematics/DifferentialDriveKinematics.h

@@ -9,9 +9,9 @@
 
 #include "frc/kinematics/ChassisSpeeds.h"
 #include "frc/kinematics/DifferentialDriveWheelSpeeds.h"
-#include "math/MathShared.h"
 #include "units/angle.h"
 #include "units/length.h"
+#include "wpimath/MathShared.h"
 
 namespace frc {
 /**

wpimath/src/main/native/include/frc/kinematics/MecanumDriveKinematics.h

@@ -13,7 +13,7 @@
 #include "frc/geometry/Translation2d.h"
 #include "frc/kinematics/ChassisSpeeds.h"
 #include "frc/kinematics/MecanumDriveWheelSpeeds.h"
-#include "math/MathShared.h"
+#include "wpimath/MathShared.h"
 
 namespace frc {
 

wpimath/src/main/native/include/frc/kinematics/SwerveDriveKinematics.h

@@ -17,8 +17,8 @@
 #include "frc/geometry/Translation2d.h"
 #include "frc/kinematics/ChassisSpeeds.h"
 #include "frc/kinematics/SwerveModuleState.h"
-#include "math/MathShared.h"
 #include "units/velocity.h"
+#include "wpimath/MathShared.h"
 
 namespace frc {
 /**

wpimath/src/main/native/include/frc/kinematics/SwerveDriveOdometry.inc

@@ -7,7 +7,7 @@
 
 #pragma once
 
-#include "math/MathShared.h"
+#include "wpimath/MathShared.h"
 
 namespace frc {
 template <size_t NumModules>

wpimath/src/main/native/include/frc/trajectory/TrapezoidProfile.h

@@ -7,8 +7,8 @@
 
 #pragma once
 
-#include "math/MathShared.h"
 #include "units/time.h"
+#include "wpimath/MathShared.h"
 
 namespace frc {