List all push providers
stream-cli chat list-pushproviders --output-format [json|tree] [flags]
# List all push providers
$ stream-cli chat list-pushproviders
  -h, --help                   help for list-pushproviders
  -o, --output-format string   Output format. One of: json|tree (default "json")
      --app string      [optional] Application name to use as it's defined in the configuration file
      --config string   [optional] Explicit config file path