Add weapon acquisition and swapping systems with data handling

GameCore/Combat/WeaponData.cs

@@ -0,0 +1,15 @@
+using GameCore.Combat.Interfaces;
+
+namespace GameCore.Combat;
+
+public class WeaponData(
+    float fireRate,
+    List<ICostEffect> fireCosts,
+    List<IEffect> onFireEffects,
+    List<IEffect> onHitEffects)
+{
+    public float FireRate { get; set; } = fireRate;
+    public List<ICostEffect> FireCosts { get; set; } = fireCosts;
+    public List<IEffect> OnFireEffects { get; set; } = onFireEffects;
+    public List<IEffect> OnHitEffects { get; set; } = onHitEffects;
+}