feat: add action.email.sendcsv param

Author: Andrei Banaru

contentctl/output/templates/savedsearches_detections.j2

@@ -55,6 +55,9 @@ action.email.subject.alert = {{ detection.deployment.alert_action.email.subject
 action.email.to = {{ detection.deployment.alert_action.email.to }}
 action.email.message.alert = {{ detection.deployment.alert_action.email.message | custom_jinja2_enrichment_filter(detection) | escapeNewlines() }}
 action.email.useNSSubject = 1
+{% if detection.deployment.alert_action.email.sendcsv %}
+action.email.sendcsv = 1
+{% endif %}
 {% endif %}
 {% if detection.deployment.alert_action.slack %}
 action.slack = 1