Implement List Streams

[João Bragança]

See SQLStreamStore/SQLStreamStore#141

{
  "href": "stream/browser?{prefix}",
  "rel": "streamStore:feed-list",
  "templated": true
}

GET /stream/browser?prefix=stream HTTP/1.1
accept: application/hal+json

HTTP/1.1 200 OK
content-type: application/hal+json

{
  "_embedded": {
    "streamStore:feed": [{
      "_links": {
        "self": { "href": "../../stream/stream-123" },
        "streamStore:feed": { "href": "../../stream/stream-123" },
      }  
    }, {
      "_links": {
        "self": { "href": "../../stream/stream-456" },
        "streamStore:feed": { "href": "../../stream/stream-456" },
      }  
    }]
  }
}

[João Bragança]

Closed by #40