Add gui resize depending on screen size

Init of request
https://qelectrotech.org/bugtracker/view.php?id=195
This is a start will have to be adjusted further.

sources/machine_info.cpp

@@ -0,0 +1,68 @@
+#include "machine_info.h"
+#include <QScreen>
+#include <QApplication>
+
+/**
+	@brief Machine_info::Machine_info
+	@param parent
+*/
+Machine_info::Machine_info(QObject *parent) : QObject(parent)
+{
+	init_get_Screen_info();
+}
+
+/**
+	@brief Machine_info::init_get_Screen_info
+	Finds the largest screen and saves the values
+*/
+void Machine_info::init_get_Screen_info()
+{
+	const auto screens = qApp->screens();
+	for (int ii = 0; ii < screens.count(); ++ii)
+	{
+		if(
+				Max_screen_width
+				<
+				screens[ii]->geometry().width()
+				*
+				screens[ii]->devicePixelRatio()
+				)
+		{
+			Max_screen_width =
+					screens[ii]->geometry().width()
+					*
+					screens[ii]->devicePixelRatio();
+		}
+		if(
+				Max_screen_height
+				<
+				screens[ii]->geometry().height()
+				*
+				screens[ii]->devicePixelRatio()
+				)
+		{
+			Max_screen_height =
+					screens[ii]->geometry().height()
+					*
+					screens[ii]->devicePixelRatio();
+		}
+	}
+}
+
+/**
+	@brief Machine_info::get_max_screen_width
+	@return max screen width
+ */
+int32_t Machine_info::get_max_screen_width()
+{
+	return Max_screen_width;
+}
+
+/**
+	@brief Machine_info::get_max_screen_height
+	@return max screen height
+*/
+int32_t Machine_info::get_max_screen_height()
+{
+	return Max_screen_height;
+}