method AppService.existsAppimport { AppService } from "https://dotland.deno.dev/x/windmill@v1.415.1/windmill-api/index.ts"; existsApp(unnamed 0: { workspace: string; path: string; }): CancelablePromise<boolean>does an app exisst at path Parametersunnamed 0: { workspace: string; path: string; }ReturnsCancelablePromise<boolean>boolean app exists