feat: Add Vec2 data type

Add vec2 data structure which will be used in the Map SDK

include/MantleAPI/Common/vector.h

 /*******************************************************************************
  * Copyright (c) 2021, Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
+ * Copyright (C) 2023, ANSYS, Inc.
  *
  * This program and the accompanying materials are made
  * available under the terms of the Eclipse Public License 2.0
@@ -22,6 +23,13 @@
 namespace mantle_api
 {
 
+template <typename T, class = typename std::enable_if_t<units::traits::is_unit_t<T>::value>>
+struct Vec2
+{
+  T x{0};
+  T y{0};
+};
+
 template <typename T, class = typename std::enable_if_t<units::traits::is_unit_t<T>::value>>
 struct Vec3
 {

[Andreas Rauschert]

Are you sure this is sufficient and you don't need all the other features, which are defined for Vec3?