Basic builder UI

[VJftw]

Would be nice to have some view of what builders are connected. There's these 2 endpoints:

GET /v1/builders

{
   "total":1,
   "data":[
      {
         "id":"6f5ca4a4-0790-4866-a753-df9264911978",
         "state":"ready",
         "updatedAt":"2018-09-21T19:21:30.589013809Z",
         "createdAt":"2018-09-21T19:21:30.589013749Z"
      }
   ]
}

GET /v1/builders/6f5ca4a4-0790-4866-a753-df9264911978

{
   "id":"6f5ca4a4-0790-4866-a753-df9264911978",
   "state":"ready",
   "updatedAt":"2018-09-21T19:21:30.589013809Z",
   "createdAt":"2018-09-21T19:21:30.589013749Z"
}

This will probably spawn more bug issues for the architect as I know I haven't put any attention into the storage of them or how I know when one is dead or maybe reconnecting