pySigma Elasticsearch Backend 0.2.0

• New output format siem_rule
  • Resulting JSON could be used with Kibana Create Rule API: https://www.elastic.co/guide/en/kibana/8.6/create-rule-api.html
  • BUT this is not compatible with the Detection Rule Import Feature: Use siem_rule_ndjson instead
• New output format siem_rule_ndjson
  • Resulting NDJSON could be used with Kibana Security Alert UI to import rule files