Add initial resource and presenter classes for game entities and effects

Code/Resources/Effects/HitscanEffectResource.cs

@@ -0,0 +1,9 @@
+using Godot;
+
+namespace CryptonymThunder.Code.Resources.Effects;
+
+[GlobalClass]
+public partial class HitscanEffectResource : EffectResource
+{
+    [Export] public float Range { get; set; } = 100f;
+}