build the structure of the extension

src/views/quick-access-tree.js

@@ -0,0 +1,44 @@
+import * as vscode from 'vscode';
+
+class QuickItem extends vscode.TreeItem {
+  constructor(label, command, args, collapsibleState, children) {
+    super(label, collapsibleState);
+    if (command) {
+      this.command = {
+        title: label,
+        command,
+        arguments: args,
+      };
+    }
+    this.customChildren = children;
+  }
+}
+
+export default class QuickAccessTreeProvider {
+  getChildren(element) {
+    if (element && element.customChildren) {
+      return element.customChildren;
+    }
+
+    return [
+      new QuickItem(
+        'SuperIDE Home',
+        undefined,
+        undefined,
+        vscode.TreeItemCollapsibleState.Expanded,
+        [new QuickItem('Open', 'superide.showHome')]
+      ),
+      new QuickItem(
+        'Miscellaneous',
+        undefined,
+        undefined,
+        vscode.TreeItemCollapsibleState.Expanded,
+        [new QuickItem('hello', 'superide.hello')]
+      ),
+    ];
+  }
+
+  getTreeItem(element) {
+    return element;
+  }
+}