A collection in a Stream library. Collections organize videos into groups.
@type t() :: %Bunnyx.Stream.Collection{ guid: String.t() | nil, name: String.t() | nil, preview_image_urls: [String.t()] | nil, preview_video_ids: String.t() | nil, total_size: integer() | nil, video_count: integer() | nil, video_library_id: pos_integer() | nil }