Proposal: Update Ansible community role

[sebdanielsson]

Updates the community Ansible role for installing Caddy.

What the new role offers:

• Build Caddy with plugins using xcaddy.
• Build Caddy for almost any distro for amd64 and arm64 systems (Tests for Debian-based, Fedora-based, Arch-based).
• Customize values like GOPROXY (Useful for enterprises that might want to use their own Go proxy).

[francislavoie]

FYI @nvjacobo in case you want to give your input