Support different app types

[eldoy]

There are several app types we'd like to deploy:

• apps with nginx config and systemd (public)
• apps without nginx config but with systemd (private / local)
• app without nginx or systemd (lib)

In waveorb.json can we add an 'apptype' field?

{
  "apptype": "web",
  "apptype": "service",
  "apptype": "lib"
}

Apptype "web" is the default. Apptype "service" is used for local API's or runners that need systemd.

Apptype "lib" is used for cron scripts, maintenance over SSH etc... they are just functions that can be invoked.