Initial commit: Unity Needle AR Menu project with MenuScene and SampleScene web apps

Add root .gitignore for Unity Library/Temp/Logs, IDE folders, and node_modules.
Include Assets, Needle TypeScript (MenuController, asset picker, WebXR), and project configuration.

Made-with: Cursor

Assets/Needle/Components.codegen/PostProcessingVolumeController.cs

@@ -0,0 +1,15 @@
+// NEEDLE_CODEGEN_START
+// auto generated code - do not edit directly
+
+#pragma warning disable
+
+namespace Needle.Typescript.GeneratedComponents
+{
+	public partial class PostProcessingVolumeController : UnityEngine.MonoBehaviour
+	{
+		public UnityEngine.Rendering.Volume @volume;
+		public void Start() {}
+	}
+}
+
+// NEEDLE_CODEGEN_END