message: Show warning message before zipdeploy
diff: @@ -70,6 +70,12 @@ export class SiteWrapper {
  }
  public async deployZip(fsPath: string, client: WebSiteManagementClient, outputChannel: vscode.OutputChannel): Promise<void> {
  + const yes: string = 'Yes';
  + const warning: string = `Are you sure you want to deploy to "${this.appName}"? This will overwrite any previous deployment and cannot be undone.`;
  + if (await vscode.window.showWarningMessage(warning, yes) !== yes) {
  + return;
  + }
  +
  outputChannel.show();
  const kuduClient: KuduClient = await this.getKuduClient(client);
  