Enhance status bar with new buttons for tree view and settings; refactor existing button setup

src/providers/prompterTreeProvider.ts

@@ -32,6 +32,16 @@ export class PrompterTreeProvider implements vscode.TreeDataProvider<FileTreeIte
         this.refresh();
     }
 
+    showSettingsView(): void {
+        this.showingSettings = true;
+        this.refresh();
+    }
+
+    showFilesView(): void {
+        this.showingSettings = false;
+        this.refresh();
+    }
+
     getTreeItem(element: FileTreeItem | SettingTreeItem): vscode.TreeItem {
         // Return the element as is if it's a SettingTreeItem
         if (element instanceof SettingTreeItem) {