feat(gui): add icons to jadx-gui (#420)

jadx-gui/build.gradle

@@ -54,7 +54,7 @@ launch4j {
     mainClassName = 'jadx.gui.JadxGUI'
     copyConfigurable = project.tasks.shadowJar.outputs.files
     jar = "lib/${project.tasks.shadowJar.archiveName}"
-//  icon = "${projectDir}/icons/myApp.ico"
+    icon = "${projectDir}/src/main/resources/logos/jadx-logo.ico"
     outfile = "jadx-gui-${version}.exe"
     copyright = 'Skylot'
     windowTitle = 'jadx'

jadx-gui/src/main/java/jadx/gui/ui/MainWindow.java

@@ -24,7 +24,9 @@
 import java.awt.event.MouseEvent;
 import java.io.File;
 import java.io.FileInputStream;
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.List;
 import java.util.Timer;
 import java.util.TimerTask;
 
@@ -49,9 +51,9 @@
 import jadx.gui.update.JadxUpdate.IUpdateCallback;
 import jadx.gui.update.data.Release;
 import jadx.gui.utils.CacheObject;
+import jadx.gui.utils.JumpPosition;
 import jadx.gui.utils.Link;
 import jadx.gui.utils.NLS;
-import jadx.gui.utils.JumpPosition;
 import jadx.gui.utils.Utils;
 
 import static javax.swing.KeyStroke.getKeyStroke;
@@ -113,10 +115,20 @@ public MainWindow(JadxSettings settings) {
 		resetCache();
 		initUI();
 		initMenuAndToolbar();
+		setWindowIcons();
 		applySettings();
 		checkForUpdate();
 	}
 
+	private void setWindowIcons() {
+		List<Image> icons = new ArrayList<>();
+		icons.add(Utils.openImage("/logos/jadx-logo-16px.png"));
+		icons.add(Utils.openImage("/logos/jadx-logo-32px.png"));
+		icons.add(Utils.openImage("/logos/jadx-logo-48px.png"));
+		icons.add(Utils.openImage("/logos/jadx-logo.png"));
+		setIconImages(icons);
+	}
+
 	private void applySettings() {
 		setFont(settings.getFont());
 		setEditorTheme(settings.getEditorThemePath());

jadx-gui/src/main/java/jadx/gui/utils/Utils.java

@@ -38,6 +38,14 @@ public static ImageIcon openIcon(String name) {
 		return new ImageIcon(resource);
 	}
 
+	public static Image openImage(String path) {
+		URL resource = Utils.class.getResource(path);
+		if (resource == null) {
+			throw new JadxRuntimeException("Image not found: " + path);
+		}
+		return Toolkit.getDefaultToolkit().createImage(resource);
+	}
+
 	@Nullable
 	public static Font openFontTTF(String name) {
 		String fontPath = "/fonts/" + name + ".ttf";