feat: register defaultazurecredential in ConfigureDanPluginDefaults

Author: SondreJDigdir

Dan.Common/Extensions/HostBuilderExtensions.cs

@@ -1,5 +1,6 @@
 using System.Reflection;
 using Azure.Core.Serialization;
+using Azure.Identity;
 using Dan.Common.Handlers;
 using Dan.Common.Interfaces;
 using Dan.Common.Services;
@@ -117,6 +118,10 @@ public static IHostBuilder ConfigureDanPluginDefaults(this IHostBuilder builder)
                 services.AddTransient<IDanPluginClientService, DanPluginClientService>();
                 services.AddTransient<ICcrClientService, CcrClientService>();
 
+                // This can be overwritten by plugins by doing their own registrations if needing special options
+                var defaultCredentials = new DefaultAzureCredential();
+                services.AddSingleton(defaultCredentials);
+
                 // Try to add the first IEvidenceSourceMetadata implementation we can find in the entry assembly
                 var evidenceSourceMetadataServiceType = typeof(IEvidenceSourceMetadata);
                 var assembly = Assembly.GetEntryAssembly();