refactor(API): add a user agent

ape_safe/client/__init__.py

@@ -3,6 +3,7 @@
 from typing import Dict, Iterator, Optional, Union, cast
 
 from ape.types import AddressType, HexBytes, MessageSignature
+from ape.utils.misc import USER_AGENT, get_package_version
 from eip712.common import SafeTxV1, SafeTxV2
 
 from ape_safe.client.base import BaseSafeClient
@@ -25,6 +26,9 @@
 )
 from ape_safe.utils import get_safe_tx_hash, order_by_signer
 
+APE_SAFE_VERSION = get_package_version(__name__)
+ORIGIN = f"Ape-Safe/{APE_SAFE_VERSION} ({USER_AGENT})"
+
 TRANSACTION_SERVICE_URL = {
     # NOTE: If URLs need to be updated, a list of available service URLs can be found at
     # https://docs.safe.global/safe-core-api/available-services.
@@ -116,7 +120,7 @@ def post_transaction(
                 b"",
             )
         )
-        post_dict: Dict = {"signature": signature.hex()}
+        post_dict: Dict = {"signature": signature.hex(), "origin": ORIGIN}
 
         for key, value in tx_data.model_dump(by_alias=True, mode="json").items():
             if isinstance(value, HexBytes):