[tor-l10n] TPA RFC 16: Replacing lektor i18n plugin

Hello TPA, web, and l10n teams! I've created a TPA-RFC for creating a new lektor internationalization plugin. I would appreciate any thoughts, concerns, comments, feedback, etc. that you might have about the topic or the proposed plugin design. You can find the RFC at <https://gitlab.torproject.org/tpo/tpa/team/-/wikis/TPA-RFC-16:-Replacing-lektor-i18n-plugin> and the discussion ticket at <https://gitlab.torproject.org/tpo/web/team/-/issues/28>. Thank you! Kez