Print attachment step text on error format

Author: DevSide

features/error_formatting.feature

@@ -54,7 +54,7 @@ Feature: Error formatting
       """
       import {Given} from 'cucumber'
 
-      Given(/^a basic step$/, function() {})
+      Given(/^a basic step$/, function() { this.attach('Basic info.') })
       Given(/^a step with a doc string$/, function(str) {})
       Given(/^a pending step$/, function() { return 'pending' })
       """
@@ -65,6 +65,7 @@ Feature: Error formatting
 
       1) Scenario: some scenario # features/a.feature:3
          ✔ Given a basic step # features/step_definitions/cucumber_steps.js:3
+            ℹ Basic info.
          ✔ And a step with a doc string # features/step_definitions/cucumber_steps.js:4
              \"\"\"
              my doc string

src/formatter/helpers/issue_helpers.js

@@ -91,8 +91,21 @@ function formatStep({
   if (actionLocation) {
     text += ` # ${colorFns.location(formatLocation(actionLocation))}`
   }
+
   text += '\n'
 
+  if (Array.isArray(testStep.attachments)) {
+    testStep.attachments
+      .filter(({ media }) => media.type === 'text/plain')
+      .forEach(({ data }) => {
+        text +=
+          indentString(
+            colorFns[Status.UNDEFINED](figures.info + ' ' + data),
+            4
+          ) + '\n'
+      })
+  }
+
   if (pickleStep) {
     let str
     const iterator = buildStepArgumentIterator({