feat: test auto keyword

chapters/chapter_02/src/type_inference.cpp

@@ -0,0 +1,14 @@
+#include "type_inference.h"
+#include <iostream>
+#include <vector>
+
+void TypeInferenceTest::run() {
+
+  const std::vector<int> int_vec = {1, 2, 3, 4, 5};
+
+  std::cout << "vector iterator with auto: ";
+  for (auto it = int_vec.cbegin(); it != int_vec.cend(); ++it) {
+    std::cout << *it << " ";
+  }
+  std::cout << std::endl;
+}