Add initial implementation of game mechanics and resources management

Scripts/Core/Effects/DestroySelfEffect.cs

@@ -0,0 +1,11 @@
+using Godot;
+
+namespace ParasiticGod.Scripts.Core.Effects;
+
+[GlobalClass]
+public partial class DestroySelfEffect : Effect
+{
+    public override void Execute(GameState gameState)
+    {
+    }
+}