output/eve: add 'verdict' field to 'alert' and 'drop' events - v11

[jufajardini]

Link to redmine ticket:
https://redmine.openinfosecfoundation.org/issues/5464

Previous PR: #9220

Describe changes from previous PR:

• handle UDP proto for reject
• rename Eve verdict function
• verdict disabled by default
• update drop documentation (json output)
• s/source/to_client
• s/destination/to_server
• update verdict schema

SV_BRANCH=pr/1314
OISF/suricata-verify#1314

Some output samples:

# IPS mode, `rejectdst` rule, TCP-reset
  "event_type": "alert",
  "src_ip": "10.16.1.11",
  "src_port": 54186,
  "dest_ip": "82.165.177.154",
  "dest_port": 80,
  "proto": "TCP",
  "pkt_src": "wire/pcap",
  "alert": {
    "action": "blocked",
    "gid": 1,
    "signature_id": 2,
    "rev": 1,
    "signature": "",
    "category": "",
    "severity": 3
  },
  "verdict": {
    "action": "drop",
    "reject-target": "to_server",
    "reject": [
      "tcp-reset"
    ]
  }
# packet with alert and pass rules triggered:
{
 "event_type": "alert",
  "verdict": {
    "action": "pass"
  }
}

[suricata-qa]

Information: QA ran without warnings.

Pipeline 15171

[victorjulien]

Merged in #9233, thanks!