chore: changelog entry token airdrop transaction

Signed-off-by: exploreriii <[email protected]>

Author: exploreriii

CHANGELOG.md

@@ -7,6 +7,7 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 ## [Unreleased]
 
 ### Added
+- feat: TokenAirdropClaim Transaction, examples (with signing required and not), unit and integration tests (#201)
 - docs: Add Google-style docstrings to `TokenId` class and its methods in `token_id.py`.
 - added Google-style docstrings to the `TransactionRecord` class including all dataclass fields, `__repr__`, `_from_proto()` & `_to_proto()` methods.
 - Standardized docstrings, improved error handling, and updated type hinting (`str | None` to `Optional[str]`) for the `FileId` class (#652).