Change log for GITLAB

Date	Changes
2023-10-20	- Mapped the fields starting with "db_" to "additional_fields". - Mapped the fields starting with "redis_" to "additional_fields". - Mapped "severity" or "jsonPayload.severity" to "security_result.severity" when the value is either "ERROR" or "NOTICE". - Mapped "jsonPayload.correlation_id" to "principal.asset_id". - Mapped "unmapped fields of jsonPayload" to "additional_fields". - Mapped "jsonPayload.worker_id" to "principal.application". - Mapped "jsonPayload.method" to "network.http.method". - Mapped "jsonPayload.pid" to "target.process.pid". - Mapped "jsonPayload.status" to "network.http.response_code". - Mapped "resource.labels.zone" to "target.cloud.availability_zone". - Mapped "resource.type" to "target.cloud.environment". - Mapped "jsonPayload.meta_user" to "target.user.userid". - Mapped "jsonPayload.username" to "principal.user.userid". - Mapped "jsonPayload.remote_ip" to "principal.ip". - Mapped "jsonPayload.ua" to "network.http.user_agent". - Mapped "jsonPayload.meta_client_id" to "target.user.userid". - Mapped "jsonPayload.path" to "target.process.file.full_path". - Mapped "protoPayload.authenticationInfo.principalEmail" to "principal.user.email_addresses". - Mapped additional fields in "protoPayload" to "additional.fields". - Provided a conditional check that required mapping is present before mapping the "metadata.event_type".
2023-10-10	- Mapped "jsonPayload.details.as" to "principal.resource.attribute.labels" and "principal.user.role_name". - Set "principal_role.type" to "ADMINISTRATOR" for logs having "jsonPayload.details.as" equals to "Owner". - Set "principal_role.type" to "SERVICE_ACCOUNT" for logs having "jsonPayload.details.as" set to either "Developer", "Maintainer", or "Reporter". - Set "principal_role.type" to "TYPE_UNSPECIFIED" for logs having "jsonPayload.details.as" equals to "Guest". - Mapped "jsonPayload.details.add" to "principal.resource.attribute.labels". - Mapped "jsonPayload.entity_type" to "target.resource.attribute.labels".
2023-08-31	- Newly created parser.