Refactor su2 reader in progress
Add support for 2D su2 files
Close su2 file after reading
Add default name for su2 reading

- Currently unstruc only outputs elements attached to names
Small refactor
Fix up Reading in Markers
Merge branch 'improve_su2_reader'
Transitioning to vectors instead of C arrays for memory safety
Add check for unnamed elements
Remove unneeded code for counting names
Removed unused variable