This object represents an animation file (GIF or H.264/MPEG-4 AVC video without sound).
@type t() :: %Telegex.Type.Animation{ duration: integer(), file_id: String.t(), file_name: String.t() | nil, file_size: integer() | nil, file_unique_id: String.t(), height: integer(), mime_type: String.t() | nil, thumbnail: Telegex.Type.PhotoSize.t() | nil, width: integer() }