feat: aetherbind, first source generator

addons/AetherBind/ISceneInstantiator.cs

@@ -0,0 +1,15 @@
+using System;
+using Godot;
+
+namespace GodotHostTest.AetherBind;
+
+public interface ISceneInstantiator
+{
+    /// <summary>
+    /// Instantiate a packed scene, just like <see cref="PackedScene.Instantiate"/>, but also looks for a scope between the top level children of the instantiated scene and triggers the dependency injection mechanism when found.
+    /// </summary>
+    /// <param name="packedScene">The packed scene to instantiate.</param>
+    /// <param name="onScopeCreated">An optional callback invoked once the scope has been created, but before instantiating the scene.</param>
+    /// <returns>The created node, with its dependencies satisfied.</returns>
+    Node Instantiate(PackedScene packedScene, Delegate? onScopeCreated = null);
+}