Add a new hook: onBeforePCAPDelete (Record raw traffic)

[alongir]

Current:

• Traffic Recorder stores only traffic from the onCaptureItem hook that is called only upon successful dissection
• Traffic that is meaningful to the user can be stored in PCAPs that aren't access by this hook (e.g. unsupported protocols)

Requested:

• Add a new hook: onBeforePCAPDelete or something similar
• A hook that enables a script to copy the file
• This hook can be used as part of the Traffic Recorder, to record all traffic.
• If this hook runs as part of a scrip and no further hooks run and no websocket connection is established, do not continue dissection.