ConnMan VPN support in OSMC

It has the connection manager (ConnMan) and we build it with VPN support. It can be configured manually, via an editor. What we don’t, presently offer, but hope to do so eventually, is offer a graphical interface for this.

A lot of users are configuring OpenVPN with /etc/init.d. This won’t work properly, as a connection manager’s duty is to handle routing. This messes with OpenVPN’s routing changes. Put shortly: ConnMan needs to be aware of OpenVPN. There’s nothing to prevent this, but I suspect a lack of documentation / guides has resulted in users falling back to the stock OpenVPN guides.