Improve function's display strings

Author: andyleejordan

src/PowerShellEditorServices/Services/Symbols/Visitors/SymbolVisitor.cs

@@ -28,6 +28,7 @@ public SymbolVisitor(ScriptFile file, Func<SymbolReference, AstVisitAction> acti
         _action = action;
     }
 
+    // TODO: Make all the display strings better (and performant).
     public override AstVisitAction VisitCommand(CommandAst commandAst)
     {
         string? commandName = VisitorUtils.GetCommandName(commandAst);
@@ -221,7 +222,7 @@ public override AstVisitAction VisitConfigurationDefinition(ConfigurationDefinit
         return _action(new SymbolReference(
             SymbolType.Configuration,
             nameExtent.Text,
-            "Configuration " + nameExtent.Text + " { }",
+            "configuration " + nameExtent.Text + " { }",
             nameExtent,
             configurationDefinitionAst.Extent,
             _file,

src/PowerShellEditorServices/Utility/VisitorUtils.cs

@@ -249,10 +249,20 @@ internal static PSESSymbols.ScriptExtent GetNameExtent(ConfigurationDefinitionAs
         internal static string GetFunctionDisplayName(FunctionDefinitionAst functionDefinitionAst)
         {
             StringBuilder sb = new();
-            sb.Append("function").Append(' ');
-            sb.Append(functionDefinitionAst.Name);
+            if (functionDefinitionAst.IsWorkflow)
+            {
+                sb.Append("workflow");
+            }
+            else if (functionDefinitionAst.IsFilter)
+            {
+                sb.Append("filter");
+            }
+            else
+            {
+                sb.Append("function");
+            }
+            sb.Append(' ').Append(functionDefinitionAst.Name).Append('(');
             // Add parameters
-            sb.Append('(');
             // TODO: Fix the parameters, this doesn't work for those specified in the body.
             if (functionDefinitionAst.Parameters?.Count > 0)
             {