Add change config file and run config file

src/clippy/config.hpp

@@ -1,5 +1,22 @@
 #pragma once
 
-class Config {
+#include <utils/editor.hpp>
 
+#include <string>
+#include <memory>
+
+namespace clippy::targets {
+class Target;
+}
+
+class Config {
+ public:
+  Config(std::string path) : path_(std::move(path)) {}
+
+  void Edit() { utils::OpenEditor(path_); }
+
+  std::unique_ptr<clippy::targets::Target> GetTarget(const std::string& target);
+
+ private:
+  std::string path_;
 };