Added a optional argv for enable logging of the client\'s request headers

[lars159]

A good debug feature for finding issues in request headers e.g. Viewport-Width and Accept-Language.

Relevant issues

Contributor checklist

• Provide tests for the changes (unless documentation-only)
• [ x] Documented any new features, CLI switches, etc. (if applicable)
  • [ x] Server --help output
  • [ x] README.md
  • [ x] doc/http-server.1 (use the same format as other entries)
• [ x] The pull request is being made against the master branch

Maintainer checklist

• Assign a version triage tag
• Approve tests if applicable

[github-actions]

This pull request has been inactive for 360 days