- Fix code editor resize problems

- Fix crash when using `get` our `out` multiple times with the same variable name
- Show the name of the file in which the error occured

YesNt.Interpreter/Runtime/Line.cs

@@ -0,0 +1,16 @@
+namespace YesNt.Interpreter.Runtime
+{
+    internal class Line
+    {
+        public Line(string content, string fileName, int lineNumber)
+        {
+            Content = content;
+            FileName = fileName;
+            LineNumber = lineNumber;
+        }
+
+        public string Content { get; set; }
+        public string FileName { get; set; }
+        public int LineNumber { get; set; }
+    }
+}