Change log for PAN_CASB

Date Changes
2022-11-25 -Fix Added to support for logs having multiple events.Used Disambiguation_Key
Mapped alertId to idm.read_only_udm.metadata.product_log_id
Mapped event_type
Mapped vendor_name
Mapped Product_event_type
Mapped description and ur_back_to_product
Mapped accountId to target.hostname
Mapped region to target.location.country_or_region
Mapped resourceName to target.resource.name,resourceId to target.resource.product_object_id,target.resource.attribute,target.resource.attribute.cloud
Mapped target.resource.attribute.cloud.environment,accountname to target.resource.attribute.cloud.environment.project.id
Mapped target.resource.attribute.labels.
Mapped security_result.rule_id,security_result.rule_name,security_result.detection_fields
Mapped security_result.description
Mapped groupId to target.user
Mapped privateIpaddress to target.ip and macAddress to target.mac
2022-10-07 Newly Created Parser.