[FEATURE] add `Exception`/failure information to `metadata`

[davidberenstein1957]

Is your feature request related to a problem? Please describe. A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] Sometimes, pipelines don't fully execute, leading to errors. These currently result in None values.

Describe the solution you'd like I think it would be useful to show this information in the distilabel metadata.

Describe alternatives you've considered NA

Additional context NA