Port NBT impl from LibAC Dart

NBT/ByteTag.cs

@@ -0,0 +1,67 @@
+using System;
+using LibAC.NBT.API;
+
+namespace LibAC.NBT
+{
+    public class ByteTag : Tag
+    {
+        public byte Value { get; private set; } = 0;
+
+        public ByteTag() { }
+
+        private ByteTag(byte value)
+        {
+            Value = value;
+        }
+
+        public static ByteTag ValueOf(byte value)
+        {
+            return new ByteTag(value);
+        }
+
+        public override void ReadValue(ByteLayer data)
+        {
+            Value = data.ReadByte();
+        }
+
+        public override void WriteValue(ByteLayer data)
+        {
+            data.WriteByte(Value);
+        }
+
+        public override TagType GetTagType()
+        {
+            return TagType.Byte;
+        }
+
+        public override dynamic GetValue()
+        {
+            return Value;
+        }
+
+        public override void SetValue(dynamic val)
+        {
+            if (val is byte)
+            {
+                Value = (byte)val;
+            }
+        }
+
+        public override void PrettyPrint(int indent, bool recurse)
+        {
+            Console.WriteLine($"{new string('\t', indent)}{Tag.GetCanonicalName(GetTagType())}: {Value}");
+        }
+
+        public override void WriteStringifiedValue(StringBuilder builder, int indent, bool isList)
+        {
+            builder.Append($"{Value}b");
+        }
+
+        public override void ReadStringifiedValue(StringReader reader)
+        {
+            string val = reader.ReadNumber();
+            Value = byte.Parse(val);
+            reader.Expect('b');
+        }
+    }
+}