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/Armor/Helmets/Circlet.cs

@@ -25,6 +25,6 @@ namespace Server.Items
 
         public override ArmorMeditationAllowance DefMedAllowance => ArmorMeditationAllowance.All;
 
-        public override Race RequiredRace => Race.Elf;
+        public override int RequiredRaces => Race.AllowElvesOnly;
     }
 }

Projects/UOContent/Items/Armor/Helmets/GemmedCirclet.cs

@@ -7,7 +7,7 @@ namespace Server.Items
         [Constructible]
         public GemmedCirclet() : base(0x2B70) => Weight = 2.0;
 
-        public override Race RequiredRace => Race.Elf;
+        public override int RequiredRaces => Race.AllowElvesOnly;
 
         public override int BasePhysicalResistance => 1;
         public override int BaseFireResistance => 5;

Projects/UOContent/Items/Armor/Helmets/RavenHelm.cs

@@ -7,7 +7,7 @@ namespace Server.Items
         [Constructible]
         public RavenHelm() : base(0x2B71) => Weight = 5.0;
 
-        public override Race RequiredRace => Race.Elf;
+        public override int RequiredRaces => Race.AllowElvesOnly;
 
         public override int BasePhysicalResistance => 5;
         public override int BaseFireResistance => 1;

Projects/UOContent/Items/Armor/Helmets/RoyalCirclet.cs

@@ -7,7 +7,7 @@ namespace Server.Items
         [Constructible]
         public RoyalCirclet() : base(0x2B6F) => Weight = 2.0;
 
-        public override Race RequiredRace => Race.Elf;
+        public override int RequiredRaces => Race.AllowElvesOnly;
 
         public override int BasePhysicalResistance => 1;
         public override int BaseFireResistance => 5;

Projects/UOContent/Items/Armor/Helmets/VultureHelm.cs

@@ -7,7 +7,7 @@ namespace Server.Items
         [Constructible]
         public VultureHelm() : base(0x2B72) => Weight = 5.0;
 
-        public override Race RequiredRace => Race.Elf;
+        public override int RequiredRaces => Race.AllowElvesOnly;
 
         public override int BasePhysicalResistance => 5;
         public override int BaseFireResistance => 1;

Projects/UOContent/Items/Armor/Helmets/WingedHelm.cs

@@ -7,7 +7,7 @@ namespace Server.Items
         [Constructible]
         public WingedHelm() : base(0x2B73) => Weight = 5.0;
 
-        public override Race RequiredRace => Race.Elf;
+        public override int RequiredRaces => Race.AllowElvesOnly;
 
         public override int BasePhysicalResistance => 5;
         public override int BaseFireResistance => 1;