Change log for ISLAND_BROWSER

Date	Changes
2024-05-20	Enhancement: - Initialized "RuleName" to null. - Mapped "userId" to "principal.user.userid". - Mapped "email" to "principal.user.email_addresses". - Mapped "type" to "metadata.product_event_type". - Mapped "hostname" to "principal.hostname" and "principal.asset.hostname". - Mapped "topLevelUrl" to "network.http.referral_url". - Mapped "ruleId" to "security_result.rule_id". - Mapped "ruleName" to "security_result.rule_name". - Mapped "Verdict" and "verdict" to "security_result.action_details". - Mapped "sourceIp" and "publicIp" to "principal.ip" and "principal.asset.ip". - Mapped "verdictReason" to "security_result.description". - Mapped "tabId", "urlWebReputation", "updatedDate", "processedDate", "service", "id", "deviceId", "frameUrl", "urlWebCategories", "isIslandPrivateAccess", "tenantId", "saasApplicationCategory", "saasApplicationName", "machineName", "details.navigationDetails.isIframe", "details.navigationDetails.is_iframe", "navigation_details.is_iframe", "matchedDevicePosture.domain", "matchedDevicePosture.workgroup", and "incognito" to "additional.fields".
2023-09-04	Newly created parser.