BaseApplication: add the InputManager

lib/src/main/java/com/github/stephengold/vsport/BaseApplication.java

@@ -29,6 +29,7 @@ OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  */
 package com.github.stephengold.vsport;
 
+import com.github.stephengold.vsport.input.InputManager;
 import java.io.PrintStream;
 import java.nio.ByteBuffer;
 import java.nio.IntBuffer;
@@ -151,6 +152,10 @@ public abstract class BaseApplication {
      * synchronization objects for frames in flight
      */
     private static Frame[] inFlightFrames;
+    /**
+     * convenient access to user input
+     */
+    private static InputManager inputManager;
     /**
      * index of the frame being rendered (among the inFlightFrames)
      */
@@ -580,6 +585,9 @@ public void start(
             // Initialize this class:
             initializeGlfw(title);
 
+            // Create and initialize the InputManager.
+            inputManager = new InputManager(windowHandle);
+
             requiredDeviceExtensions
                     .add(KHRSwapchain.VK_KHR_SWAPCHAIN_EXTENSION_NAME);
             if (enableDebugging) {
@@ -733,6 +741,10 @@ private void cleanUpBase() {
             vkInstance = null;
         }
 
+        if (inputManager != null) {
+            inputManager = inputManager.destroy();
+        }
+
         if (debugMessengerCallback != null) {
             debugMessengerCallback.free();
             debugMessengerCallback = null;