Change log for CUSTOM_APPLICATION_ACCESS

Date Changes
2025-02-07 - Added support to parse the unparsed logs.
- Mapped "request_time" to "metadata.collected_timestamp".
- Mapped "timestamp" to "metadata.event_timestamp".
- Mapped "level" to "additional.fields".
- Mapped "msg_1" to "metadata.description".
- Mapped "service" to "additional.fields".
- Mapped "env" to "additional.fields".
- Mapped "request_id" to "principal.resource.product_object_id".
- Mapped "user_id" to "principal.user.userid".
- Mapped "response.status" to "network.http.response_code".
2024-03-11 - Newly created parser.