Add containers module with initial implementation and integrate into CMake build system.

cpp/containers/functions.cpp

@@ -0,0 +1,14 @@
+#include <iostream>
+
+void printArrayAtPosition(int *array, int index) {
+    if (array == nullptr) {
+        return;
+    }
+    if (index < 0) {
+        return;
+    }
+
+    std::cout << "size of array: " << sizeof(array) << std::endl;
+    std::cout << array[index] << std::endl;
+}
+