cli: Move most classes to shared lib for reuse

shared/utils.cpp

@@ -0,0 +1,20 @@
+#include <QDebug>
+#include "utils.h"
+Utils::Utils()
+{
+}
+
+QByteArray Utils::readFile(QString path)
+{
+	QFile file(path);
+	if(!file.open(QIODevice::ReadOnly))
+	{
+		throw LooqsGeneralException("Failed to open file: " + path);
+	}
+	QByteArray data = file.readAll();
+	if(data.isEmpty() && file.error() != QFileDevice::FileError::NoError)
+	{
+		throw LooqsGeneralException("Error reading file: " + path + ", Error: " + file.error());
+	}
+	return data;
+}