Allow moz:debuggerAddress in DesiredCapabilities

[just-boris]

Proposed changes

Allow moz:debuggerAddress capability which is described here: https://firefox-source-docs.mozilla.org/testing/geckodriver/Capabilities.html

Ironically, the webdriverio documentation also mentions this feature, but it is missing in types.

Tested the change locally, works well with Geckodriver v0.31.0

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update

Checklist

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• I have added proper type definitions for new commands (if appropriate)

Further comments

Reviewers: @webdriverio/project-committers

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: just-boris / name: Boris Serdiuk (defa7ce)

[christian-bromann]

👍 thanks!

[christian-bromann]

@just-boris mind signing the CLA with the email you've used to make the commit?

[just-boris]

Sure, need to check some stuff internally first. I will put this PR out of drafts when it is ready

[christian-bromann]

Given this has been pending for so long I went ahead and applied the change. If you have started the CLA process with your company please continue so that next time it is gonna be faster. Thanks for the suggestion.