added in a playground

playground/chi/main.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+)
+
+func main() {
+	r := chi.NewRouter()
+	r.Get("/", func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte("welcome"))
+	})
+	http.ListenAndServe(":3001", r)
+}