hdri: Add screenshot testing

hdri/config.screenshot.json

@@ -0,0 +1,6 @@
+{
+    "scenarios": {
+        "readyEvent": "HDRI.bin",
+        "reference": "./test/reference.png"
+    }
+}

hdri/test/index.js

@@ -0,0 +1,47 @@
+/* wle:auto-imports:start */
+import {MouseLookComponent} from '@wonderlandengine/components';
+import {WasdControlsComponent} from '@wonderlandengine/components';
+/* wle:auto-imports:end */
+
+import {loadRuntime} from '@wonderlandengine/api';
+
+/* wle:auto-constants:start */
+const Constants = {
+    ProjectName: 'HDRI',
+    RuntimeBaseName: 'WonderlandRuntime',
+    WebXRRequiredFeatures: ['local',],
+    WebXROptionalFeatures: ['local','hand-tracking','hit-test',],
+};
+const RuntimeOptions = {
+    physx: false,
+    loader: false,
+    xrFramebufferScaleFactor: 1,
+    xrOfferSession: {
+        mode: 'auto',
+        features: Constants.WebXRRequiredFeatures,
+        optionalFeatures: Constants.WebXROptionalFeatures,
+    },
+    canvas: 'canvas',
+};
+/* wle:auto-constants:end */
+
+const engine = await loadRuntime(Constants.RuntimeBaseName, RuntimeOptions);
+
+/* wle:auto-register:start */
+engine.registerComponent(MouseLookComponent);
+engine.registerComponent(WasdControlsComponent);
+/* wle:auto-register:end */
+
+await engine.scene.load(`${Constants.ProjectName}.bin`);
+
+document.getElementById('version')?.remove();
+document.getElementById('ar-button')?.remove();
+document.getElementById('vr-button')?.remove();
+
+/* Dispatch scene ready event once the image is loaded.
+ * This ensure the test suite takes a screenshot after
+ * all resources are available. */
+
+await engine.imagesPromise;
+
+engine.scene.dispatchReadyEvent();