Adding label

Author: osortega

src/vscode-dts/vscode.proposed.chatSessionsProvider.d.ts

@@ -8,6 +8,11 @@ declare module 'vscode' {
 	 * Provides a list of information about chat sessions.
 	 */
 	export interface ChatSessionItemProvider {
+		/**
+		 * Label of the extension that registers the provider.
+		 */
+		readonly label: string;
+
 		/**
 		 * Event that the provider can fire to signal that chat sessions have changed.
 		 */