add Name func option

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

logger/options.go

@@ -11,6 +11,7 @@ type Option func(*Options)
 
 // Options holds logger options
 type Options struct {
+	Name string
 	// The logging level the logger should log at. default is `InfoLevel`
 	Level Level
 	// fields to always be logged
@@ -72,3 +73,10 @@ func WithContext(ctx context.Context) Option {
 		o.Context = ctx
 	}
 }
+
+// WithName sets the name
+func withName(n string) Option {
+	return func(o *Options) {
+		o.Name = n
+	}
+}