Yaml app config

[jay-dee7]

fixes #88

[jay-dee7]

@guacamole this push is failing because of some weird issue from skynet:

{
   "errors": [
      {
         "code": "BLOB_UNKNOWN",
         "message": "[could not execute request; error code received; 500 response from GET: failed to fetch skylink: [timed out after 30s; unable to create data source for skylink; unable to download base sector; base sector download did not succeed; project timed out]; error response]",
         "detail": {
            "error": "[could not execute request; error code received; 500 response from GET: failed to fetch skylink: [timed out after 30s; unable to create data source for skylink; unable to download base sector; base sector download did not succeed; project timed out]; error response]",
            "skylink": "sia://AABY2GARQZiMZh5NznjE50AZcSemYQikMkoIxrvUdm6aFw"
         }
      }
   ]
}

[guacamole]

LGTM 🥇