Add support for Minecraft 1.16.2 (#1214)

* Implement MC version 1.16.2 basic support
All packets ID update done
Tested in 1.16.2 craftbukkit server
* Implement MC 1.16.2 entity handling
New EntityPalette
* Add back protocol version checking for entity handling
Was removed during testing and forgot to add it back
* Implement inventory handling for MC 1.16+
Item ID got changed in 1.16+ so a palette is needed.
* Fix ChangeSlot command
What a joke
* Handle 1.16 new entity properties name
Convert new naming style to old style
* Revert "Handle 1.16 new entity properties name"
This reverts commit 52c7d29062.
* Update AutoAttack to use the new entity properties key
* Fix item type to ID conversion
* Sort item types by name
* Remove ZombiePigmanSpawnEgg
User ZombifiedPiglinSpawnEgg instead (new name for same item)
* Add missing 1.16.2 version strings
* Remove old ItemTypeGenerator
* Sort entity types by name
* Palette loading, instructions, NotImplemented err
Co-authored-by: ORelio <ORelio@users.noreply.github.com>

MinecraftClient/Inventory/ItemPalettes/ItemPalette.cs

@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace MinecraftClient.Inventory.ItemPalettes
+{
+    public abstract class ItemPalette
+    {
+        protected abstract Dictionary<int, ItemType> GetDict();
+        private readonly Dictionary<ItemType, int> DictReverse = new Dictionary<ItemType, int>();
+
+        public ItemPalette()
+        {
+            // Index reverse mappings for use in ToId()
+            foreach (KeyValuePair<int, ItemType> entry in GetDict())
+                DictReverse.Add(entry.Value, entry.Key);
+        }
+
+        public ItemType FromId(int id)
+        {
+            return GetDict()[id];
+        }
+
+        public int ToId(ItemType itemType)
+        {
+            if (itemType == ItemType.Null)
+                return -1;
+            return DictReverse[itemType];
+        }
+    }
+}