config: <connection> only supports remote

[reynir]

A connection profile may have a number of different options. We only support remote. It is also documented in a (* TODO *) in the code, and now it is documented here as well.

miragevpn/src/config.ml

Lines 1285 to 1292 in 0f3de0a

	(* TODO entries can sometimes be nested, like in <connection> blocks:
	The following OpenVPN options may be used inside of a <connection> block:
	bind, connect-retry, connect-retry-max, connect-timeout,
	explicit-exit-notify, float, fragment, http-proxy, http-proxy-option,
	link-mtu, local, lport, mssfix, mtu-disc, nobind, port,
	proto, remote, rport, socks-proxy, tun-mtu and tun-mtu-extra. *)
	(* TODO basically a Connection block is a subset of Conf_map.t,
	we should use the same parser.*)

I'm unsure what the comment about nesting is about. I don't think you can write <connection><connection>...</connection></connection>.