Closes microsoft#87110: adds Memento.keys property

Author: Eric Amodio

src/vs/vscode.d.ts

@@ -6214,6 +6214,11 @@ declare module 'vscode' {
 	 */
 	export interface Memento {
 
+		/**
+		 * The stored keys.
+		 */
+		readonly keys: readonly string[];
+
 		/**
 		 * Return a value.
 		 *

src/vs/vscode.proposed.d.ts

@@ -2783,18 +2783,6 @@ declare module 'vscode' {
 
 	//#endregion
 
-	//#region https://github.com/microsoft/vscode/issues/87110 @eamodio
-
-	export interface Memento {
-
-		/**
-		 * The stored keys.
-		 */
-		readonly keys: readonly string[];
-	}
-
-	//#endregion
-
 	//#region https://github.com/microsoft/vscode/issues/126258 @aeschli
 
 	export interface StatusBarItem {