feat(meshIO): LinearRescale method added

Rescaling a mesh by a linear transformation is a useful option so that we can start with a single "base" mesh and then rescale it to the dimensions needed for our problem. This commit adds the LinearRescale option too meshIO so that a unit sphere can be turned into a sphere of arbitrary radius (as an example).

src/meshIO/public/meshIO.h

@@ -19,13 +19,19 @@ public:
      * @brief Constructor that initializes the MeshIO object with a mesh file.
      * @param mesh_file The name of the mesh file.
      */
-    MeshIO(const std::string &mesh_file);
+    MeshIO(const std::string &mesh_file, double scale_factor = 1.0);
 
     /**
      * @brief Destructor for the MeshIO class.
      */
     ~MeshIO();
 
+    /**
+     * @brief Rescale the mesh by a linear factor.
+     * @param scale_factor The factor by which to scale the mesh.
+     */
+    void LinearRescale(double scale_factor);
+
     /**
      * @brief Get the mesh object.
      * @return Reference to the mesh object.