feat: add automatic registration of standard logging services and ILogger

Author: hjgraca

libraries/src/AWS.Lambda.Powertools.Logging/PowertoolsLoggingBuilderExtensions.cs

@@ -82,10 +82,17 @@ public static ILoggingBuilder AddPowertoolsLogger(
     {
         builder.AddConfiguration();
 
+        // register standard logging services
+        builder.Services.AddLogging();
+        
         builder.Services.TryAddSingleton<IPowertoolsEnvironment, PowertoolsEnvironment>();
         builder.Services.TryAddSingleton<IPowertoolsConfigurations>(sp =>
             new PowertoolsConfigurations(sp.GetRequiredService<IPowertoolsEnvironment>()));
 
+        // automatically register ILogger
+        builder.Services.TryAddSingleton<ILogger>(provider =>
+            provider.GetRequiredService<ILoggerFactory>().CreatePowertoolsLogger());
+
         builder.Services.TryAddEnumerable(
             ServiceDescriptor.Singleton<ILoggerProvider, PowertoolsLoggerProvider>(provider =>
             {