[#133] Added show_path configuration to extension to allow adding current URL to screenshot files.

[richardgaunt]

Closes: #133

Checklist before requesting a review

• I have formatted the subject to include ticket number as [#123] Verb in past tense with dot at the end.
• I have added a link to the issue tracker
• I have provided information in Changed section about WHY something was done if this was not a normal implementation
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have added tests that prove my fix is effective or that my feature works
• I have run new and existing relevant tests locally with my changes, and they passed
• I have provided screenshots, where applicable

Changed

1. Added configuration flag: current_path so that:

extensions:
    DrevOps\BehatScreenshotExtension:
      dir: '%paths.base%/.logs/screenshots'
      purge: true
      show_path: true # Change to 'false' to not include the path on html screenshots.

will output the current_path to the screenshot html before the opening tag.
3. Updated tests

Not implemented

1. Watermark of screenshots with current path - deemed too difficult with different sized screens.
2. Hook allowing clients to alter the debug information, I have written the class to allow easier implementation but there does not seem to be an easy way to manage the order of hooks of @AfterStep or an easy way to get access to extensions (without DI) etc - if you have ideas let me know,

Screenshots

[AlexSkrypnyk]

@richardgaunt
Thanks a bunch for all your hard work on this and for making such a fantastic pull request!