PacksManager added to engine

src/util/listutil.cpp

@@ -0,0 +1,17 @@
+#include "listutil.h"
+#include "../util/stringutil.h"
+
+#include <sstream>
+
+std::string util::to_string(const std::vector<std::string>& vec) {
+    std::stringstream ss;
+    ss << "[";
+    for (size_t i = 0; i < vec.size(); i++) {
+        ss << util::quote(vec.at(i));
+        if (i < vec.size()-1) {
+            ss << ", ";
+        }
+    }
+    ss << "]";
+    return ss.str();
+}