Change log for NASUNI_FILE_SERVICES

Date Changes
2025-03-24 - Added support for "csv" format.
- event.idm.read_only_udm.section_result.action_details: Newly mapped `action` raw log field with `event.idm.read_only_udm.section_result.action_details` UDM field.
- event.idm.read_only_udm.target.user.group_identifiers: Newly mapped `group_identifiers` raw log field with `event.idm.read_only_udm.target.user.group_identifiers` UDM field.
- event.idm.read_only_udm.metadata.event_timestamp: Newly mapped `event_timestamp` raw log field with `event.idm.read_only_udm.metadata.event_timestamp` UDM field.
- event.idm.read_only_udm.principal.asset.ip: Newly mapped `ipaddr` raw log field with `event.idm.read_only_udm.principal.asset.ip` UDM field.
- event.idm.read_only_udm.principal.asset.hostname: Newly mapped `host` raw log field with `event.idm.read_only_udm.principal.asset.hostname` UDM field.
- Added grok pattern in order to map `ipaddr` raw log field with `event.idm.read_only_udm.principal.ip` and `event.idm.read_only_udm.principal.asset.ip` UDM fields only if it is a valid IP.
2022-08-21 - Mapped "newpath" to "additional.fields".
2022-08-08 Enhancement:
- Added a Grok pattern to handle new SYSLOG logs.
- Added conditonal check for "event_type" "FILE_UNCATEGORIZED".
- Added "event_type" "STATUS_UPDATE"
- Mapped "application" to "target.application".
- Mapped "prin_port" to "principal.port".
- Mapped "host" to "principal.hostname".
- Mapped "proc_id" to "principal.process.pid".
2022-07-07 Newly created parser