[enhancement] Provide a diff feature that refine packet comparison

[alxroyer-thales]

Not just a comparison of serialized buffers, but a fine report on data that diverges between two packets.

This feature may support approximate comparisons for certain fields (like timestamps for example).

[alxroyer-thales]

Successfully implemented in a Scapy wrapper.

I could provide a PR to propose the integration of it directly in Scapy implementation.

[polybassa]

sounds great, could you please provide a PR?

[alxroyer-thales]

I'm on it :)

[alxroyer-thales]

I'm on it :)

Done!