[API] Add imgui-app and example modules

example/src/main/java/Main.java

@@ -0,0 +1,33 @@
+import imgui.ImGui;
+import imgui.ImGuiIO;
+import imgui.app.Application;
+import imgui.app.Configuration;
+import imgui.flag.ImGuiConfigFlags;
+
+public final class Main extends Application {
+    @Override
+    protected void configure(final Configuration config) {
+        config.setTitle("Example Application");
+    }
+
+    @Override
+    protected void initImGui(final Configuration config) {
+        super.initImGui(config);
+
+        final ImGuiIO io = ImGui.getIO();
+        io.setIniFilename(null);                                // We don't want to save .ini file
+        io.addConfigFlags(ImGuiConfigFlags.NavEnableKeyboard);  // Enable Keyboard Controls
+        io.addConfigFlags(ImGuiConfigFlags.DockingEnable);      // Enable Docking
+        io.addConfigFlags(ImGuiConfigFlags.ViewportsEnable);    // Enable Multi-Viewport / Platform Windows
+        io.setConfigViewportsNoTaskBarIcon(true);
+    }
+
+    @Override
+    public void process() {
+        ImGui.text("Hello, World");
+    }
+
+    public static void main(final String[] args) {
+        launch(new Main());
+    }
+}