Add initial GUI test

build.gradle

@@ -15,4 +15,10 @@ repositories {
     jcenter()
 }
 
+jar {
+    manifest {
+        attributes 'Main-Class': 'link.infra.packwiz.launcher.Main'
+    }
+}
+
 mainClassName = 'link.infra.packwiz.launcher.Main'

src/main/java/link/infra/packwiz/launcher/Main.java

@@ -1,9 +1,70 @@
 package link.infra.packwiz.launcher;
 
+import java.awt.EventQueue;
+
+import javax.swing.JFrame;
+import javax.swing.UIManager;
+import javax.swing.JPanel;
+import java.awt.BorderLayout;
+import javax.swing.JProgressBar;
+import javax.swing.JButton;
+import javax.swing.JLabel;
+import javax.swing.border.EmptyBorder;
+
 public class Main {
 
+	private JFrame frmPackwizlauncher;
+
+	/**
+	 * Launch the application.
+	 */
 	public static void main(String[] args) {
-		System.out.println("Hello World!");
+		EventQueue.invokeLater(new Runnable() {
+			public void run() {
+				try {
+					UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+					Main window = new Main();
+					window.frmPackwizlauncher.setVisible(true);
+				} catch (Exception e) {
+					e.printStackTrace();
+				}
+			}
+		});
+	}
+
+	/**
+	 * Create the application.
+	 */
+	public Main() {
+		initialize();
+	}
+
+	/**
+	 * Initialize the contents of the frame.
+	 */
+	private void initialize() {
+		frmPackwizlauncher = new JFrame();
+		frmPackwizlauncher.setTitle("packwiz-launcher");
+		frmPackwizlauncher.setBounds(100, 100, 450, 87);
+		frmPackwizlauncher.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		
+		JPanel panel = new JPanel();
+		panel.setBorder(new EmptyBorder(10, 10, 10, 10));
+		frmPackwizlauncher.getContentPane().add(panel, BorderLayout.CENTER);
+		panel.setLayout(new BorderLayout(0, 0));
+		
+		JProgressBar progressBar = new JProgressBar();
+		progressBar.setValue(50);
+		panel.add(progressBar, BorderLayout.NORTH);
+		
+		JLabel lblProgresslabel = new JLabel("Loading...");
+		panel.add(lblProgresslabel, BorderLayout.SOUTH);
+		
+		JPanel panel_1 = new JPanel();
+		frmPackwizlauncher.getContentPane().add(panel_1, BorderLayout.EAST);
+		
+		JButton btnOptions = new JButton("Options...");
+		panel_1.add(btnOptions);
 	}
 
 }