Ability to specify Redis DSN from ENV (i.e. add data binding picker)

It does not work from the UI, but can be done directly in the config.json file.
Have been using it for a couple of years now.

An extract of my ENV:

{
  "debug": "{{$_ENV.DEBUG_MODE == 1}}",
  "cron": "{{$_ENV.RUN_CRON == 1}}",
  "secret": "{{$_ENV.WAPPLER_SECRET}}",
  "redis": "{{$_ENV.REDIS_URL}}",
}