Integration for Atlassian Beacon

The [Atlassian Beacon](https://www.atlassian.com/software/beacon) solution provides the capability to ingest Atlassian Beacon Alerts into Microsoft Sentinel. **Underlying Microsoft Technologies used:** This solution takes a dependency on the following technologies, and some of these dependencies either may be in [Preview](https://azure.microsoft.com/support/legal/preview-supplemental-terms/) state or might result in additional ingestion or operational costs: a. [Azure Monitor HTTP Data Collector API](https://docs.microsoft.com/azure/azure-monitor/logs/data-collector-api) b. [Azure Logic Apps](https://azure.microsoft.com/products/logic-apps/#overview)