plenty of changes to make the package more ergonomic

Including: bug fixes, api changes, new packages, and more!

example/main.go

@@ -9,7 +9,7 @@ import (
 	"time"
 
 	"git.ma-al.com/gora_filip/observer/pkg/tracer"
-	"git.ma-al.com/gora_filip/pkg/attr"
+	"git.ma-al.com/gora_filip/pkg/attr/layer_attr"
 	"git.ma-al.com/gora_filip/pkg/exporters"
 	"git.ma-al.com/gora_filip/pkg/fiber_tracing"
 	"git.ma-al.com/gora_filip/pkg/level"
@@ -25,12 +25,13 @@ func main() {
 		StreamRequestBody: true,
 	})
 
-	exps := make([]exporters.ExporterWithConfig, 2)
+	exps := make([]exporters.TraceExporter, 0)
 	exps = append(exps, exporters.DevConsoleExporter())
 	gelfExp, err := exporters.GelfExporter()
 	if err == nil {
 		exps = append(exps, gelfExp)
 	}
+
 	main.Use(fiber_tracing.NewMiddleware(fiber_tracing.Config{
 		AppName:         "example",
 		Version:         "0.0.0",
@@ -40,12 +41,16 @@ func main() {
 	defer fiber_tracing.ShutdownTracer()
 
 	main.Get("/", func(c *fiber.Ctx) error {
-		ctx, span := tracer.Handler(c)
+		ctx, span := fiber_tracing.FStart(c, layer_attr.Handler{
+			Level: level.DEBUG,
+		}.AsOpts())
 		defer span.End()
 
 		span.AddEvent(
 			"smthing is happening",
-			attr.WithAttributes(attr.SeverityLevel(level.INFO), attr.SourceCodeLocation(0)),
+			layer_attr.Handler{
+				Level: level.INFO,
+			}.AsOpts(),
 		)
 
 		err := Serv(ctx)