[wpimath] Add remaining struct and protobuf implementations (#5953)

wpimath/src/main/native/include/frc/struct/VectorStruct.h

@@ -0,0 +1,33 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+#pragma once
+
+#include <fmt/format.h>
+#include <wpi/ct_string.h>
+#include <wpi/struct/Struct.h>
+
+#include "frc/EigenCore.h"
+
+template <int Size, int Options, int MaxRows, int MaxCols>
+struct wpi::Struct<frc::Matrixd<Size, 1, Options, MaxRows, MaxCols>> {
+  static constexpr ct_string kTypeName =
+      wpi::Concat("Vector__"_ct_string, wpi::NumToCtString<Size>());
+  static constexpr std::string_view GetTypeName() { return kTypeName; }
+  static constexpr size_t GetSize() { return Size * 8; }
+  static constexpr ct_string kSchema = wpi::Concat(
+      "double data["_ct_string, wpi::NumToCtString<Size>(), "]"_ct_string);
+  static constexpr std::string_view GetSchema() { return kSchema; }
+
+  static frc::Matrixd<Size, 1, Options, MaxRows, MaxCols> Unpack(
+      std::span<const uint8_t> data);
+  static void Pack(
+      std::span<uint8_t> data,
+      const frc::Matrixd<Size, 1, Options, MaxRows, MaxCols>& value);
+};
+
+static_assert(wpi::StructSerializable<frc::Vectord<1>>);
+static_assert(wpi::StructSerializable<frc::Vectord<3>>);
+
+#include "frc/struct/VectorStruct.inc"