feat(playwright): add support for attachments in steps

[baev]

Context

Now, users may use allure.attachment API instead of test.info().attach to add attachments to the current step. Attachments created by the Playwright (screenshot diffs) are still added to the test instead of the current executed step. Related issue microsoft/playwright#14364

How to use

import test from '@playwright/test';
import { allure } from 'allure-playwright'
test('should add attachment to the step', async ({}, testInfo) => {
  await allure.step('outer step 1', async () => {
    await allure.step('inner step 1.1', async () => {
      await allure.attachment('some', 'some-data', 'text/plain');
    });
  });
});

Additional changes

All the Allure API methods (epic, feature etc) now need to be awaited. Playwright Core enforces this requirement since we communicate between workers to sync the metadata:

import test from '@playwright/test';
import { allure } from 'allure-playwright'
test('test with feature', async ({}, testInfo) => {
  await allure.feature("some feature")
});

fixes #436

Checklist

• Sign Allure CLA
• Provide unit tests

[EgorBodnar]

@baev great work! Thanks, we've been waiting for it a lot

Will the feature be available in version 2.7 of allure-playwright?
Is it known when the new release with this feature is planned?

[paresh-celigo]

@baev I am facing this error for same use

[preethinaren]

How I can implement the allure.logStep in playwright cucumber JS framework
Error: Allure.logStep is not a function

code:
const { Allure, ContentType, AllureRuntime } = require("allure-js-commons");
const { CucumberAllureWorld } = require('allure-cucumberjs');
const allure = new Allure();

const modifiedFirstName = FirstName + randomString;
const modifiedLastName = LastName + randomString;

allure.logStep(`Modified First Name: ${modifiedFirstName}`); 
allure.logStep (`Modified Last Name: ${modifiedLastName}`);

package.json:
=======
"scripts": {
"test": "npx cross-env NODE_ENV=TEST cucumber-js --tags @test --require cucumber.js --require src/tests/step-definitions/**/*.js --format ./src/helper/report/allure-config.js",
"allure:generate": "npx allure generate ./allure-results --clean",
"allure:open": "allure open allure-report"

},