Cloud-based Load Testing REST APIs are here

Introduced REST APIs for Cloud-based Load Testing (CLT) with Visual Studio Online. These APIs allow users to start/stop load test runs, retrieve load test results (KPIs, performance, throughput, application metrics), get messages and exceptions during runs, retrieve counter instances and samples, and list past load test runs. The post also details API usage requirements, including enabling alternate credentials, specifying the correct service endpoint (e.g., `https://abc.vsclt.visualstudio.com/`), including the `api-version` parameter, and outlines the steps for creating and running load tests using these APIs, including uploading test files to Azure Blob storage.