added backend

backend/main.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+)
+
+func main() {
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintln(w, "Hello from Go!")
+	})
+
+	fmt.Println("Server running on :8080")
+	if err := http.ListenAndServe(":8080", nil); err != nil {
+		panic(err)
+	}
+}