feat: Add TokenCrendtial for Azure DevOps Pipeline

Author: thygesteffensen

src/Core/EnvironmentConfigurationExtension.cs

@@ -60,6 +60,11 @@ public static EnvironmentConfiguration AddEnvironmentConfiguration(
                 managedIdentityResourceIdFunc(environmentConfiguration)),
             RuntimeEnvironment.Cloud when managedIdentityResourceIdFunc is null => new ManagedIdentityCredential(),
             RuntimeEnvironment.UnitTest => new TokenCredentialMock(),
+            RuntimeEnvironment.BuildServer => new AzurePipelinesCredential(
+                tenantId: Environment.GetEnvironmentVariable("APP_REG_TENANT_ID") ?? throw new InvalidOperationException("APP_REG_TENANT_ID environment variable is not set."),
+                clientId: Environment.GetEnvironmentVariable("APP_REG_CLIENT_ID") ?? throw new InvalidOperationException("APP_REG_CLIENT_ID environment variable is not set."),
+                serviceConnectionId: Environment.GetEnvironmentVariable("APP_REG_SERVICE_CONNECTION_ID") ?? throw new InvalidOperationException("APP_REG_SERVICE_CONNECTION_ID environment variable is not set."),
+                systemAccessToken: Environment.GetEnvironmentVariable("SYSTEM_ACCESS_TOKEN") ?? throw new InvalidOperationException("SYSTEM_ACCESS_TOKEN environment variable is not set.")),
             _ => throw new NotSupportedException(
                 $"Runtime environment {environmentConfiguration.RuntimeEnvironment} is not supported"),
         };