VTU Reader is version dependent

[jacob-moore22]

There are issues with reading vtu files that are version 1.0 vs version 2.3. Also, not all vtu files have ObjectIDs, so we need to make that fail gracefully.

[ClarkMyWords]

Bandaid Fix (around line 1028 in mesh_io.hpp):

if(found==false){
-   throw std::runtime_error("ERROR: ObjectIDs were not found in the XML file!");
-   //std::cout << "ERROR: ObjectIDs were not found in the XML file!" << std::endl;
+   mesh_inps.object_ids.host.set_values(0.0);
}
mesh_inps.object_ids.update_device();
+ in.clear();
+ in.seekg(0, std::ios::beg);