delete old code and start an approach for parsing fonts and page content streams

src/UglyToad.Pdf/Graphics/Operations/SetTextRenderingMode.cs

@@ -0,0 +1,21 @@
+namespace UglyToad.Pdf.Graphics.Operations
+{
+    internal class SetTextRenderingMode : IGraphicsStateOperation
+    {
+        public const string Symbol = "Tr";
+
+        public string Operator => Symbol;
+
+        public int Mode { get; }
+
+        public SetTextRenderingMode(int mode)
+        {
+            Mode = mode;
+        }
+
+        public override string ToString()
+        {
+            return $"{Mode} {Symbol}";
+        }
+    }
+}