Rewrite and simplify Inventory Menu, various fixes for item effects

Zennysoft.Game.Ma/src/items/InventoryItemStats.cs

@@ -9,9 +9,11 @@ namespace Zennysoft.Game.Ma;
 public abstract partial class InventoryItemStats : Resource
 {
   [Export]
+  [Save("equipment_name")]
   public string Name { get; set; }
 
   [Export(PropertyHint.MultilineText)]
+  [Save("equipment_description")]
   public string Description { get; set; }
 
   [Export(PropertyHint.Range, "0, 1, 0.01")]
@@ -30,33 +32,43 @@ public abstract partial class InventoryItemStats : Resource
   public double BonusLuck { get; set; } = 0.05;
 
   [Export]
+  [Save("equipment_bonus_hp")]
+  public int BonusHP { get; set; } = 0;
+
+  [Export]
+  [Save("equipment_bonus_vt")]
+  public int BonusVT { get; set; } = 0;
+
+  [Export]
+  [Save("equipment_aeolic_resist")]
   public int AeolicResistance { get; set; } = 0;
 
   [Export]
+  [Save("equipment_telluric_resist")]
   public int TelluricResistance { get; set; } = 0;
 
   [Export]
+  [Save("equipment_hydric_resist")]
   public int HydricResistance { get; set; } = 0;
 
   [Export]
+  [Save("equipment_igneous_resist")]
   public int IgneousResistance { get; set; } = 0;
 
   [Export]
+  [Save("equipment_ferrum_resist")]
   public int FerrumResistance { get; set; } = 0;
 
   [Export(PropertyHint.Range, "0, 25, 0.1")]
+  [Save("equipment_throw_speed")]
   public float ThrowSpeed { get; set; } = 12.0f;
 
   [Export(PropertyHint.Range, "0, 999, 1")]
-  public int IncreaseMaxHPAmount { get; set; }
-
-  [Export(PropertyHint.Range, "0, 999, 1")]
-  public int IncreaseMaxVTAmount { get; set; }
-
-  [Export(PropertyHint.Range, "0, 999, 1")]
+  [Save("equipment_throw_damage")]
   public int ThrowDamage { get; set; } = 5;
 
   [Export]
+  [Save("equipment_item_tag")]
   public ItemTag ItemTag { get; set; } = ItemTag.None;
 
   [Export]