Added deserialization from JSON file

src/Project-Orion/serialization.cpp

@@ -0,0 +1,35 @@
+#include "serialization.h"
+#include <filesystem>
+#include <QFile>
+#include <QJsonDocument>
+#include <QJsonArray>
+#include <QJsonObject>
+
+UserList&& loadUserList(const QString &file)
+{
+    QFile doc{std::filesystem::path{file.toStdString()}};
+    QString fileContents = doc.readAll();
+    QJsonDocument document = QJsonDocument::fromJson(fileContents.toUtf8());
+
+    QJsonArray array = document.array();
+    QVector<User> container;
+
+    for (auto elem: array)
+    {
+        auto obj = elem.toObject();
+        User newUser{obj["name"].toString(), QDate::fromString(obj["date_of_birth"].toString()),
+                     QDate::fromString(obj["date_of_death"].toString()), obj["default"].toBool()};
+
+        container.append(newUser);
+    }
+
+    UserList returnObj;
+    returnObj.setList(container);
+
+    return std::move(returnObj);
+}
+
+void saveUserList(const UserList &list)
+{
+
+}