Client: Add LogonUI & Storage

Client/Source/Utils/FileSystem.cpp

@@ -0,0 +1,16 @@
+#include <Utils/FileSystem.h>
+
+QString ReadFileString(const QString &filePath, bool* result) {
+    QFile file(filePath);
+    if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        *result = false;
+        return QString();
+    }
+
+    QTextStream in(&file);
+    QString content = in.readAll();
+    file.close();
+
+    *result = true;
+    return content;
+}