Issue 475 introduce new cucumber allure world

[epszaw]

fixes #475

Context

Changes the logic for work with nested steps and their labels and attachments introducing our own enhanced World implementation.

Example:

const { Then, setWorldConstructor } = require('@cucumber/cucumber')

Then("test name", async function () {
  // use anonymous function
  await this.step("nested step one", function() {
     // any label attaches to the current cucumber step, not nested one
     this.label("label_name", "label_value");
     this.epic("epic_name");
     // the attachment will be attached to the nested step
     this.attachment(JSON.stringify({ foo: 'bar' }), 'application/json')
  })

  // or arrow one
  await this.step("nested step one", (step) => {
     // any label attaches to the current cucumber step, not nested one
     step.label("label_name", "label_value");
     step.epic("epic_name");
     // the attachment will be attached to the nested step
     step.attachment(JSON.stringify({ foo: 'bar' }), 'application/json')
  })
})

If you want to keep the functoinality in parallel mode, set CucumberAllureWorld as world constructor:

- const { Then } = require('@cucumber/cucumber')
+ const { Then, setWorldConstructor } = require('@cucumber/cucumber')
+ const { CucumberAllureWorld } = require("allure-cucumberjs")

+ // after that you're able to use `this.label`, `this.step` etc. methods inside your steps defs
+ setWorldConstructor(CucumberAllureWorld);

Then("test name", async function () {
  // use anonymous function
  await this.step("nested step one", function() {
     // any label attaches to the current cucumber step, not nested one
     this.label("label_name", "label_value");
     this.epic("epic_name");
     // the attachment will be attached to the nested step
     this.attachment(JSON.stringify({ foo: 'bar' }), 'application/json')
  })

  // or arrow one
  await this.step("nested step one", (step) => {
     // any label attaches to the current cucumber step, not nested one
     step.label("label_name", "label_value");
     step.epic("epic_name");
     // the attachment will be attached to the nested step
     step.attachment(JSON.stringify({ foo: 'bar' }), 'application/json')
  })
})

Checklist

• Sign Allure CLA
• Provide unit tests

[vovsemenv]

please clenup unused imports

[epszaw]

👍

[vovsemenv]

Code looks good overall.
⚠️ Tested with https://stackblitz.com/edit/node-xnc6mn?file=package.json
allure-results generated successfully in paralell mode but report something goes wrong with attachments

⚠️ Also something wrong with typescript. It didn't get types for our allure utilities

[vovsemenv]

Code looks fine.
Report in parallel mode works fine in example tests. (I imagine if we have big cucumber project to test on)
Some changes to readme and we fine to go.

[vovsemenv]

👻 LGTM
Tested locally