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

src/UglyToad.Pdf/Parser/IPageContentParser.cs

@@ -0,0 +1,11 @@
+namespace UglyToad.Pdf.Parser
+{
+    using Content;
+    using Graphics;
+    using IO;
+
+    internal interface IPageContentParser
+    {
+        PageContent Parse(IGraphicsStateOperationFactory operationFactory, IInputBytes inputBytes);
+    }
+}