Port NBT impl from LibAC Dart

NBT/StringTag.cs

@@ -0,0 +1,73 @@
+using System;
+using LibAC.NBT.API;
+
+namespace LibAC.NBT
+{
+    public class StringTag : Tag
+    {
+        public string value { get; private set; } = "";
+
+        public StringTag() { }
+
+        public StringTag(string str)
+        {
+            value = str;
+        }
+
+        public static StringTag ValueOf(string str)
+        {
+            return new StringTag(str);
+        }
+
+        public override void ReadValue(ByteLayer data)
+        {
+            value = data.ReadString();
+        }
+
+        public override void WriteValue(ByteLayer data)
+        {
+            data.WriteString(value);
+        }
+
+        public override TagType GetTagType()
+        {
+            return TagType.String;
+        }
+
+        public override void SetValue(dynamic val)
+        {
+            if (val is string) value = val;
+        }
+
+        public override dynamic GetValue()
+        {
+            return value;
+        }
+
+        public override void PrettyPrint(int indent, bool recurse)
+        {
+            Console.WriteLine($"{new string('\t', indent)}{Tag.GetCanonicalName(GetTagType())}: {value}");
+        }
+
+        public override void WriteStringifiedValue(StringBuilder builder, int indent, bool isList)
+        {
+            if (ShouldQuote(value))
+                builder.Append($"{(isList ? new string('\t', indent) : "")}\"{value}\"");
+            else
+                builder.Append($"{(isList ? new string('\t', indent) : "")}{value}");
+        }
+
+        public override void ReadStringifiedValue(StringReader reader)
+        {
+            string str = reader.ReadString();
+            value = str;
+        }
+
+        // This method will need to be implemented for checking if a string should be quoted
+        private bool ShouldQuote(string str)
+        {
+            // Implement logic for determining if the string needs to be quoted
+            return false;
+        }
+    }
+}