Change log for OPNSENSE

Date Changes
2025-05-29 Enhancement:
- event.idm.read_only_udm.principal.administrative_domain: Removed mapping of `domain` from `principal.administrative_domain` UDM field.
- event.idm.read_only_udm.intermediary.hostname: Newly mapped `inter_host` raw log field to `intermediary.hostname` UDM field.
2025-02-18 Enhancement:
- Added support to parse the unparsed logs.
2025-01-21 Enhancement:
- Added support to parse the unparsed logs.
2024-12-05 Enhancement:
- Added support to handle CSV logs.
2024-11-07 Enhancement:
- Added support to handle CSV logs.
2023-11-22 - Newly created parser.