feat: added support for a reverse proxy setup using 'X-Forwarded-For'…

… headers

feat: added root path for announcing to http tracker

workflow: disable binary releases until properly licensed

refactor: renamed webserver to http_api_server

Updated README.md

updated README.md

Merge pull request torrust#6 from torrust/wip/udp-server-rewrite

Wip/udp server rewrite