Change log for WORKSPACE_ACTIVITY

Date	Changes
2022-04-27	Device related fields mapped to asset entity as well Following fields were mapped: "DEVICE_TYPE", "DEVICE_NAME", "DEVICE_ID", "DEVICE_MODEL", "DEVICE_PLATFORM", "OS_VERSION", "DEVICE_USER", "COMPANY_DEVICE_ID"
2022-04-22	Bug-fix - Modified mapping for 'id.customerId' from 'principal.user.userid' to 'about.labels'
2022-04-13	Enhancement- Added UDM events for logs where: - applicationName is 'context_aware_access' - applicationName is 'data_studio' - events.name is 'email_as_attachment' - applicationName is 'drive'. Mapped id.customerId to principal.user.userid. Corrected mapping for security_result[0].action[0] from "ALLOW" to "BLOCK" for one of the fields. Mapped fields "detector_id", "detector_type", "display_name" to "event.idm.read_only_udm.about.labels".