refactor: type id class refactor with dataclass decorator (#574)

Signed-off-by: Raghav Ganesh <[email protected]>

Author: RaghavGanesh7

CHANGELOG.md

@@ -26,6 +26,7 @@ This changelog is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.
 
 ### Changed
 
+- Refactored TopicId class to use @dataclass decorator for reducing boilerplate code
 - Renamed `examples/nft_allowance.py` to `examples/account_allowance_nft.py` for consistency with account class naming scheme
 - Added changelog conflict resolution examples to `docs/common_issues.md`
 - Refactored `examples/topic_create.py` to be more modular by splitting functions and renaming `create_topic()` to `main()`.

src/hiero_sdk_python/consensus/topic_id.py

@@ -7,28 +7,27 @@
 formats within the Hiero SDK.
 """
 
+from dataclasses import dataclass
+
 from hiero_sdk_python.hapi.services import basic_types_pb2
 
+@dataclass
 class TopicId:
-
     """
     Represents the unique identifier of a topic in the Hedera Consensus Service (HCS).
 
     A `TopicId` consists of three components: shard, realm, and num.
     This class provides convenient methods for converting between Python objects,
     protobuf `TopicID` instances, and string formats.
+
+    Args:
+        shard (int): The shard number of the topic. Defaults to 0.
+        realm (int): The realm number of the topic. Defaults to 0.
+        num (int): The topic number. Defaults to 0.
     """
-    def __init__(self, shard: int = 0, realm: int = 0, num: int = 0) -> None:
-        """
-        Initializes a new instance of the TopicId class.
-        Args:
-            shard (int): The shard number of the topic.
-            realm (int): The realm number of the topic.
-            num (int): The topic number.
-        """
-        self.shard: int = shard
-        self.realm: int = realm
-        self.num: int = num
+    shard: int = 0
+    realm: int = 0
+    num: int = 0
 
     @classmethod
     def _from_proto(cls, topic_id_proto: basic_types_pb2.TopicID) -> "TopicId":