[Feature request] - Improper termination of MC simulations

[Radiation-Transport]

Is your feature request related to a problem? Please describe.
Currently, the user cannot understand if the simulation is finished by an improper behavior or not.
Therefore, if discrepancies are found in the post-processing, the user cannot be 100% if an simulation error in the case of that (e.g., stopped due to LP, bad trouble) as for example the case of FNG-W.

Describe the solution you'd like
Flag the simulation properly terminated (as first priority) and which are the warnings highlighted by the simulation code (as second priority). An additional file may be generated, for instance.

Describe alternatives you've considered
Leave as it is.

[dodu94]

We need to understand if there is space to fit this in v3.1.0 or it needs to be post-poned to a later one