text: #include <iostream>
  
  #include "calculator/calculator.hpp"
  #include "calculator/square_root.hpp"
  #include "spdlog/sinks/stdout_color_sinks.h"
  #include "spdlog/spdlog.h"
  
  int main() {
      calc::Square_root sqrt;
      calc::Calculator clc{sqrt};
      std::cout << clc.add(1, 2) << "\n";
  
      auto console = spdlog::stdout_color_mt("console");
      spdlog::get("console")->info("Hello spdlog!");
  
      return 0;
  }
  