Support extra services in caddy / Warnet dashboard

[pinheadmz]

Closes #679

Abstracts the fork observer and grafana services that were hard coded into the caddy chart. Also adds any extra configured reverse proxy. The test simply adds the REST interface from one of the tanks by adding this to network.yaml:

services:
  - title: Ringo REST
    path: /ringo/
    host: ringo.default
    port: 18443

In conjunction with a plugin, any additional web services can now be added to a warnet network

[pinheadmz]