chore: add token_create_transaction_freeze_key.py example (#827)

Signed-off-by: Shahzaibyy <shahzaibshah0028@gmail.com>

Author: Shahzaibyy

CHANGELOG.md

@@ -14,6 +14,7 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 - Added missing validation logic `fee_schedule_key` in integration `token_create_transaction_e2e_test.py` and ``token_update_transaction_e2e_test.py`. 
 - Add `account_balance_query.py` example to demonstrate how to use the CryptoGetAccountBalanceQuery class.
 - Add `examples/token_create_transaction_admin_key.py` demonstrating admin key privileges for token management including token updates, key changes, and deletion (#798)
+- Add `examples/token_create_transaction_freeze_key.py` showcasing freeze key behavior, expected failures without the key, and the effect of freezing/unfreezing on transfers.
 - Add `examples/account_info.py` to demonstrate `AccountInfo` opeartions
 - Added `HbarUnit` class and Extend `Hbar` class to handle floating-point numbers
 - feat: Allow `PrivateKey` to be used for keys in `TopicCreateTransaction` for consistency.