Better provisioning of OwnTracks credentials

Feature Requests
1

With the OwnTracks integration moving to a new scheme where the API token is encoded in the URL, it’s difficult to get the URL over the the device.

I have put in a feature request with OwnTracks to support configuring via QR code : https://github.com/owntracks/talk/issues/56#issuecomment-447351016

Suggestion is to provide a QR code or means to download an .otrc file.

2

Maybe HASS could data/base64 encode the .otrc configuration file on the fly that then can be downloaded from a mobile client.