Change log for MIKROTIK_ROUTER

Date Changes
2024-11-26 Enhancement:
- Modified the Grok pattern to remove "period" from the data.
- Mapped "server_name" to "target.hostname" and "target.asset.
2024-11-15 Enhancement:
- Mapped "action" to "security_result.action".
2024-09-30 - Changed mapping for "username" from "principal.user.userid", "src.user.userid" to "target.user.userid".
- For the login event, mapped "metadata.event_type" to "USER_LOGIN".
- For the logout event, mapped "metadata.event_type" to "USER_LOGOUT".
- Mapped "application" to "target.application".
- Mapped "bytes_in" to "network.received_bytes".
- Mapped "bytes_out" to "network.sent_bytes".
- Mapped "connection_time_in_seconds", "packets_in" and "packets_out" to "security_result.detection_fields".
2024-05-28 Newly created parser.