feat: support Telegram Bot API 10.0 (May 8, 2026)

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Summary

Track implementation of Telegram Bot API 10.0 (May 8, 2026) in go-telegram/bot: models, methods_params.go, methods.go, multipart/build_request_form for new media/input types, tests, README and CHANGELOG.

Depends on project policy: may target main after 9.6 is merged or a single combined branch — align with maintainers.

References

• Changelog: https://core.telegram.org/bots/api#may-8-2026

Scope (high level)

Guest mode

• Fields on User, Message, Update; new types such as SentGuestMessage; method answerGuestQuery.

Chat management

• e.g. can_react_to_messages on ChatMemberRestricted / ChatPermissions; return_bots on getChatAdministrators; methods deleteAllMessageReactions, deleteMessageReaction; visibility of some messages from other bots in groups (per docs).

Polls (additional to 9.6)

• Types such as InputMediaSticker / InputMediaLocation / InputMediaVenue, PollMedia, media on Poll / PollOption, InputPollMedia, InputPollOptionMedia, members_only, country_codes, minimum poll options count change.

Live photos

• LivePhoto, InputMediaLivePhoto, fields on Message / ExternalReplyInfo, sendLivePhoto, paid variants, use in sendMediaGroup / editMessageMedia per API.

General

• Business / bot-to-bot messaging notes from changelog; sendMessageDraft empty text; BotAccessSettings; getManagedBotAccessSettings, setManagedBotAccessSettings, getUserPersonalChatMessages.

Acceptance criteria

• All new/changed items from the 10.0 changelog are covered following existing library conventions.
• go test ./... passes; README and CHANGELOG updated for Bot API 10.0.
• New multipart/input types covered by tests where non-trivial (similar to prior profile/media fixes).