Consolidate the provision of a single `http_server` utility method, with `tls_enabled` as a boolean flag,
and rework type annotations to make them more understandable.
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Chris Sewell <chrisj_sewell@hotmail.com>