feat: login service and implement database storage

internal/utilities/response/success.go

@@ -0,0 +1,23 @@
+package response
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+)
+
+type Response[T any] struct {
+	Data T `json:"data"`
+}
+
+func RespondJsonSuccess[T any](ctx context.Context, w http.ResponseWriter, data T) {
+	setDefaultHeaders(ctx, w.Header())
+
+	w.WriteHeader(http.StatusOK)
+
+	b, _ := json.Marshal(Response[T]{
+		Data: data,
+	})
+
+	w.Write(b)
+}