Add initial implementation of game mechanics and resources management

Scripts/Core/MiracleDefinition.cs

@@ -0,0 +1,18 @@
+using Godot;
+using Godot.Collections;
+using ParasiticGod.Scripts.Core.Effects;
+
+namespace ParasiticGod.Scripts.Core;
+
+[GlobalClass]
+public partial class MiracleDefinition : Resource
+{
+    public string Id { get; set; }
+    public bool UnlockedByDefault { get; set; }
+
+    [Export] public string Name { get; set; }
+    [Export] public double FaithCost { get; set; }
+    [Export] public long FollowersRequired { get; set; }
+
+    [Export] public Array<Effect> Effects { get; set; }
+}