fix: Updates races to properly support gargoyle equipment. (#744)

* Adds `RaceFlag` to the `Race` object. This is `1 << RaceIndex`
* Replaces `RequiredRace`  with `RequiredRaces` for items.
* Adds convenience flags for `RequiredRaces`
  ```cs
  
  public const int AllowAllRaces = 0x7;      // Race.Human.RaceFlag | Race.Elf.RaceFlag | Race.Gargoyle.RaceFlag
  public const int AllowHumanOrElves = 0x3;  // Race.Human.RaceFlag | Race.Elf.RaceFlag
  public const int AllowElvesOnly = 0x2;     // Race.Elf.RaceFlag
  public const int AllowGargoylesOnly = 0x4; // Race.Gargoyle.RaceFlag
  ```
* Example usage on an item:
  ```cs
  public override int RequiredRaces => Race.AllowHumanOrElves;
  ```
* Adds Wood and Stone armor material types
* Updates Woodland armor to Wood
* Adds proper messaging for race restrictions
* Adds gargoyle only for object properties
* Adds `CheckRace` functions for validating if a race or mobile can use the item:
  ```cs
  bool CheckRace(Race race);
  bool CheckRace(Mobile from, bool message = true);
  ```

Projects/UOContent/Items/Clothing/BaseClothing.cs

@@ -713,11 +713,16 @@ namespace Server.Items
                 list.Add(1060636); // exceptional
             }
 
-            if (RequiredRace == Race.Elf)
+            if (RequiredRaces == Race.AllowElvesOnly)
             {
                 list.Add(1075086); // Elves Only
             }
 
+            if (RequiredRaces == Race.AllowGargoylesOnly)
+            {
+                list.Add(1111709); // Gargoyles Only
+            }
+
             SkillBonuses?.GetProperties(list);
 
             int prop;

Projects/UOContent/Items/Clothing/OuterTorso.cs

@@ -479,7 +479,7 @@ namespace Server.Items
         [Constructible]
         public FemaleElvenRobe(int hue = 0) : base(0x2FBA, hue) => Weight = 2.0;
 
-        public override Race RequiredRace => Race.Elf;
+        public override int RequiredRaces => Race.AllowElvesOnly;
 
         public override bool AllowMaleWearer => false;
     }

Projects/UOContent/Items/Clothing/Pants.cs

@@ -39,6 +39,6 @@ namespace Server.Items
         [Constructible]
         public ElvenPants(int hue = 0) : base(0x2FC3, hue) => Weight = 2.0;
 
-        public override Race RequiredRace => Race.Elf;
+        public override int RequiredRaces => Race.AllowElvesOnly;
     }
 }

Projects/UOContent/Items/Clothing/Shirts.cs

@@ -42,7 +42,7 @@ namespace Server.Items
         [Constructible]
         public ElvenShirt(int hue = 0) : base(0x3175, hue) => Weight = 2.0;
 
-        public override Race RequiredRace => Race.Elf;
+        public override int RequiredRaces => Race.AllowElvesOnly;
     }
 
     [Serializable(0)]

Projects/UOContent/Items/Clothing/Shoes.cs

@@ -194,7 +194,7 @@ namespace Server.Items
 
         public override CraftResource DefaultResource => CraftResource.RegularLeather;
 
-        public override Race RequiredRace => Race.Elf;
+        public override int RequiredRaces => Race.AllowElvesOnly;
 
         public override bool Dye(Mobile from, DyeTub sender) => false;
     }

Projects/UOContent/Items/Clothing/Waist.cs

@@ -31,7 +31,7 @@ namespace Server.Items
         [Constructible]
         public WoodlandBelt(int hue = 0) : base(0x2B68, hue) => Weight = 4.0;
 
-        public override Race RequiredRace => Race.Elf;
+        public override int RequiredRaces => Race.AllowElvesOnly;
 
         public override bool Dye(Mobile from, DyeTub sender)
         {