Add session info to all raw events and unify the data type of the time field

[syncpark]

Summary

We're currently working on improving the structure of protocol events generated by Sensor.
Events generated by Semi-supervised & Unsupervised engines also require the same modifications as raw events.
Additionally, this process also requires consistent unification of the types of time-related fields.

Tasks

• Add packet count and size information, which was only present in the Conn event, to the detection event structures.
  orig_pkts, resp_pkts, orig_l2_bytes, resp_l2_bytes
• Add a duration (i64 type) field to the detection event structures and store the session duration in this field.
• The types of the start_time and end_time fields are unified to DateTime<Utc> (or Timestamp when applying Jiff crate).