Input variables have introduced an excellent way to parameterize and configure builtin interactive variables. But they lack support for contributing new variables.

But there is an easy way to combine the new input variables with the existing command based variables: a new input variable type "command" makes it possible to turn any command based variable into an input variable.

Example:

	"inputs":[
		{
			"label": "processPicker",
			"description": "Select process to attach to",
			"type": "command",
			"command": "extension.processes.pickProcess",
                         "args": {
			    "processTypes": [ "node", "iojs", "electron" ]
                         }
		}
	],

/cc @alexr00