Add Git authentication options to command settings and pipeline

Author: glucaci

src/Confix.Tool/src/Confix.Library/Pipelines/ValidateCommandPipeline.cs

@@ -12,6 +12,8 @@ public sealed class ValidateCommandPipeline : Pipeline
     protected override void Configure(IPipelineDescriptor builder)
     {
         builder
+            .AddOption(GitUsernameOptions.Instance)
+            .AddOption(GitTokenOptions.Instance)
             .Use<LoadConfigurationMiddleware>()
             .UseEnvironment()
             .UseHandler(InvokeAsync);