add initial application structure with configuration, logging, and health check endpoints

internal/domain/vo/response.go

@@ -0,0 +1,22 @@
+package vo
+
+type Response struct {
+	Code    string `json:"code"`
+	Message string `json:"message"`
+	Data    any    `json:"data,omitempty"`
+}
+
+func OK(data any) Response {
+	return Response{
+		Code:    "OK",
+		Message: "success",
+		Data:    data,
+	}
+}
+
+func Error(message string) Response {
+	return Response{
+		Code:    "ERROR",
+		Message: message,
+	}
+}