adding codelens

CodeiumVS/CodeLens/CodeLensTag.cs

@@ -0,0 +1,19 @@
+using Microsoft.VisualStudio.Text;
+using Microsoft.VisualStudio.Text.Tagging;
+
+namespace CodeiumVS
+{
+
+    // the SpaceNegotiatingAdornmentTag is used to tell the editor to create an empty space
+    // they work like a more complicated version of <br> from html
+    internal class CodeLensTag : SpaceNegotiatingAdornmentTag
+    {
+        public CodeLensTag(double width, double topSpace, double baseline, double textHeight,
+            double bottomSpace, PositionAffinity affinity, object identityTag,
+            object providerTag)
+            : base(width, topSpace, baseline, textHeight, bottomSpace, affinity, identityTag,
+                providerTag)
+        {
+        }
+    }
+}