Add unimplemented graph display provider

Author: astrelsky

src/main/java/cppclassanalyzer/graph/InheritanceGraphDisplayProvider.java

@@ -0,0 +1,11 @@
+package cppclassanalyzer.graph;
+
+import ghidra.graph.visualization.DefaultGraphDisplayProvider;
+
+public class InheritanceGraphDisplayProvider extends DefaultGraphDisplayProvider {
+
+	@Override
+	public String getName() {
+		return "Inheritance Graph Display (Not Implemented)";
+	}
+}