Add icons and details for type-hierarchy view

Author: stephan-razin

package.json

@@ -248,13 +248,13 @@
                 "command": "clangd.typeHierarchy.viewParents",
                 "category": "clangd",
                 "title": "Types: Show Base Classes",
-                "icon": "$(triangle-up)"
+                "icon": "$(type-hierarchy-super)"
             },
             {
                 "command": "clangd.typeHierarchy.viewChildren",
                 "category": "clangd",
                 "title": "Types: Show Derived Classes",
-                "icon": "$(triangle-down)"
+                "icon": "$(type-hierarchy-sub)"
             },
             {
                 "command": "clangd.typeHierarchy.close",

src/type-hierarchy.ts

@@ -73,6 +73,8 @@ const dummyNode: TypeHierarchyItem = {
 class TypeHierarchyTreeItem extends vscode.TreeItem {
   constructor(item: TypeHierarchyItem, direction: TypeHierarchyDirection) {
     super(item.name);
+    this.description = item.detail;
+    this.iconPath = new vscode.ThemeIcon('symbol-class');
     let subItems = direction === TypeHierarchyDirection.Children ? item.children : item.parents;
     if (subItems) {
       if (subItems.length === 0) {