feat: initial import

Interfaces/ITargetCollector.cs

@@ -0,0 +1,13 @@
+namespace GodotHostTest.Interfaces;
+
+/// <summary>
+/// An object which collects targets as soon as they are created.
+/// </summary>
+public interface ITargetCollector
+{
+    /// <summary>
+    /// Register a target.
+    /// </summary>
+    /// <param name="target">The new target.</param>
+    void NewTarget(ITarget target);
+}