Feature: If a species was computed in a previous iteration, search for its Arkane YAML file

[alongd]

If a species was computed in a previous iteration and participates in a reactions sent for computation, search for its Arkane YAML file and send it to ARC in the current iteration

If the species is in a library, and was already sent to ARC for computing a reaction, and is now sent again in a new iteration, there will be no YAML file. So consider sending the flag "don't include in lib" instead of the fag "compute_thermo", and make sure an Arkane YAML file is saved.