refactor: migrate project and start refactor

Legacy/BallanceTASEditor/Core/LimitedStack.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace BallanceTASEditor.Core {
+    public class LimitedStack<T> {
+        private static readonly int STACK_LENGTH = 20;
+
+        public LimitedStack() {
+            _stack = new LinkedList<T>();
+        }
+
+        private LinkedList<T> _stack;
+
+        public void Push(T data) {
+            _stack.AddLast(data);
+            if (_stack.Count > STACK_LENGTH) {
+                _stack.RemoveFirst();
+            }
+        }
+
+        public T Pop() {
+            if (_stack.Last == null) return default(T);
+            var data = _stack.Last.Value;
+            _stack.RemoveLast();
+            return data;
+        }
+
+        public void Clear() {
+            _stack.Clear();
+        }
+
+        public bool IsEmpty() {
+            return _stack.Count == 0;
+        }
+        
+    }
+}