This MR splits out the logic such that there is now a binary that handles function based calls without validating the app name. We should only every check the app name for the subcommands and not internally. Internal calls should have their arguments taken at face value.
This will allow dropping many of the "source config/functions" calls littered over the codebase. Plugin triggers are the way to perform cross-plugin communication :)
This change adds json output as both key/value as well as a list of objects. The former can be used in quick scripting environments, while the latter allows higher-level languages to have a bit more structure around how environment variables are declared. Specifically, systems such as kubernetes understand the latter method, while the former can be used within Nomad job files.
