[wpimath] Add extern templates for common cases

This helps reduce compile times and memory usage.

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

@@ -8,6 +8,7 @@
 #include <cstddef>
 #include <ctime>
 
+#include <wpi/SymbolExports.h>
 #include <wpi/timestamp.h>
 
 #include "SwerveDriveKinematics.h"
@@ -112,6 +113,9 @@ class SwerveDriveOdometry {
   Rotation2d m_gyroOffset;
 };
 
+extern template class EXPORT_TEMPLATE_DECLARE(WPILIB_DLLEXPORT)
+    SwerveDriveOdometry<4>;
+
 }  // namespace frc
 
 #include "SwerveDriveOdometry.inc"