Supports Bot API 9.5 and adds related tests and examples

[DanielHallx]

Description

Adapt Bot API 9.5 in the library and add repository-style validation/examples for the new features.

Library changes included:

• Added date_time support to MessageEntity, including unix_time and date_time_format
• Added sender_tag to Message
• Added tag to ChatMemberMember and ChatMemberRestricted
• Added can_edit_tag to ChatMemberRestricted and ChatPermissions
• Added can_manage_tags to ChatMemberAdministrator and ChatAdministratorRights
• Added can_manage_tags support to promote_chat_member in sync and async implementations
• Added set_chat_member_tag in sync and async implementations, plus low-level API helpers
• Updated send_message_draft docs to match Bot API 9.5 behavior

Additional follow-up changes:

• Added offline coverage for new fields and method forwarding
• Added optional live integration coverage for:
  • sending a message with a date_time entity
  • set_chat_member_tag with restore of the original tag
• Added sync and async examples for:
  • date_time
  • set_chat_member_tag

Describe your tests

How did you test your change?

• Ran offline tests:
  • .venv/bin/python -m pytest tests/test_types.py tests/test_telebot.py -q
• Ran targeted live smoke tests with TOKEN, CHAT_ID, GROUP_ID, and TEST_MEMBER_ID configured:
  • .venv/bin/python -m pytest tests/test_telebot.py -q -k 'date_time_entity or set_chat_member_tag'
• Ran syntax verification:
  • .venv/bin/python -m compileall tests/test_telebot.py examples/date_time_example.py examples/set_chat_member_tag_example.py examples/asynchronous_telebot/date_time_example.py examples/asynchronous_telebot/set_chat_member_tag_example.py

Python version:

• 3.13.6

OS:

• macOS 15.6.1

Checklist:

• I added/edited example on new feature/change (if exists)
• My changes won't break backward compatibility
• I made changes both for sync and async