feat(plugins): add Telegram callback query hook

[ITMINDSCAPE]

Summary

• add a generic telegram_callback_query plugin lifecycle hook for Telegram callbacks not claimed by built-in prefixes
• pass only authenticated scalar callback metadata and require plugins to validate authorization plus plugin-owned state
• strictly validate handled/unhandled results and isolate plugin and Telegram API failures
• support bounded callback answers, message edits, and independent keyboard removal while preserving existing markup on chat-backed edit-only results
• document the hook contract and security expectations

Tests

• strict TDD: focused callback tests were added and witnessed failing before the adapter hook implementation, then passing after implementation
• scripts/run_tests.sh tests/gateway/test_telegram_callback_plugin_hook.py tests/hermes_cli/test_plugins.py — 53 passed
• scripts/run_tests.sh tests/gateway/test_telegram*.py — 522 passed across 55 files (one unrelated pytest temp-cleanup retry; the affected file then passed cleanly with retries disabled)
• HERMES_TEST_FILE_RETRIES=0 scripts/run_tests.sh tests/gateway/test_telegram_forum_commands.py — 2 passed
• git diff --cached --check — clean before commit

Review

Independent staged-diff review: PASS. Reviewed SHA-256 858d10e122d8fe0d12a21df938f5714fdd922e30a1bcf06be2fd9b5dad07c38a; no files modified by reviewer.