Upload a .png file to create a new sticker set or add to an existing one
User identifier of sticker file owner
Png image with the sticker
Uploaded File on success
Deprecated: InputFile isn't supported yet
TelegramBotException on errors
UploadStickerFileMethod, https://core.telegram.org/bots/api#uploadstickerfile
See Implementation
Upload a .png file to create a new sticker set or add to an existing one