Add parse-level support for a delay timer before next command

[jdalley]

Herdias had a suggestion for augmenting the parse part of commands to add a timer of sorts:

Command from a script as an example:

{
  "command": "go path",
  "parse": [
    {
      "moveNextNow": true,
      "outcome": "You must be standing",
      "moveNextAfterMs": 2000 // Not required, will override the extension's Cmd Delay Range (ms) setting for ONLY the next command.
    },
    {
      "moveNextWhen": "You arrive",
      "outcome": "You run down"
    }
  ]
}

Property name TBD, other options:

• timer
• delay
• delayBeforeNext