Multi-account and apps

Facts agents must know

1. One SA key can access many apps if those apps (or account-level access) were granted in Play Console.
2. Google Publisher API cannot list apps. There is no applications.list. gps apps list reads the local registry in ~/.config/gps/config.json.
3. Pass --package (or registered defaultPackage) on every Publisher call.

Setup

gps accounts add phosum --credentials /secrets/phosum-sa.json --default-package com.phosum --default
gps accounts add acme --credentials /secrets/acme-sa.json --default-package com.acme.app

gps apps add com.phosum --account phosum --name Phosum --default
gps apps add com.other.app --account phosum --name Other
gps apps add com.acme.app --account acme --name Acme