Fix boards listing (#1520)

* Fix boards listing

* use arduio-cli sorting fix

* re-use code to handle board list response

* change `handleListBoards` visibility to `private`

* pad menu items order with leading zeros to fix alphanumeric order

arduino-ide-extension/src/browser/contributions/sketch-control.ts

@@ -176,7 +176,7 @@ export class SketchControl extends SketchContribution {
               {
                 commandId: command.id,
                 label: this.labelProvider.getName(uri),
-                order: `${i}`,
+                order: String(i).padStart(4),
               }
             );
             this.toDisposeBeforeCreateNewContextMenu.push(