The screen a community guild shows new members: its description and up to 5 welcome_channels, maps with atom keys.
description
welcome_channels
@type t() :: %Lingo.Type.WelcomeScreen{ description: String.t() | nil, welcome_channels: [welcome_channel()] }
@type welcome_channel() :: %{ channel_id: String.t(), description: String.t(), emoji_id: String.t() | nil, emoji_name: String.t() | nil }