Add option to feed findings to a local Syslog/Siem systems

[bararchy]

• Add tag to CLI which enables feeding "found issues" directly to TCP/UDP syslog server
• Also add TLS option for TCP
• The issue data should be converted into 1 of 2 formats: CEF (https://www.npmjs.com/package/cef) and standard syslog When running the command nexploit-cli logfeed you will have more options like:
  • --syslog-host: address to syslog server
  • --port: port of syslog host, default to syslog default
  • --protocol: UDP or TCP/TLS, should default to UDP
  • --format: cef or format-string (i.e {DATE} {SEVERITY} {DETIALS} {LINK}), default to cef
  • --severity-map: cef has severity levels from 0 to 10, we should be able to allow mapping our severity against specified cef numbers, defaults are low=6 medium=8 high=10
• all the relevant auth parameters
• The CLI needs to actively pull new findings from nexploit.app via api
• The back-end should tag which issues have been pulled by the feeder already and the CLI should skip them when polling