refactor(middlewares,router): follow http package structure and interfaces

internals/middlewares/development.go

@@ -0,0 +1,21 @@
+package middlewares
+
+import (
+	"log"
+	"net/http"
+)
+
+type DevelopmentMiddleware struct {
+	Logger *log.Logger
+}
+
+func (m DevelopmentMiddleware) Serve(handler http.HandlerFunc) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		m.Logger.Printf("New request: %s", r.URL.Path)
+
+		handler(w, r)
+
+		w.Header().Del("Cache-Control")
+		w.Header().Add("Cache-Control", "max-age=0")
+	}
+}