refactor(contracts): add proxy kwargs to ContractContainer.at (#2527)

Author: fubuloubu

src/ape/contracts/base.py

@@ -48,6 +48,7 @@
     from ethpm_types.contract_type import ABI_W_SELECTOR_T, ContractType
     from pandas import DataFrame
 
+    from ape.api.networks import ProxyInfoAPI
     from ape.api.transactions import ReceiptAPI, TransactionAPI
     from ape.types.address import AddressType
 
@@ -1483,6 +1484,8 @@ def at(
         address: "AddressType",
         txn_hash: Optional[Union[str, HexBytes]] = None,
         fetch_from_explorer: bool = True,
+        proxy_info: Optional["ProxyInfoAPI"] = None,
+        detect_proxy: bool = True,
     ) -> ContractInstance:
         """
         Get a contract at the given address.
@@ -1507,9 +1510,11 @@ def at(
         """
         return self.chain_manager.contracts.instance_at(
             address,
-            self.contract_type,
+            contract_type=self.contract_type,
             txn_hash=txn_hash,
             fetch_from_explorer=fetch_from_explorer,
+            proxy_info=proxy_info,
+            detect_proxy=detect_proxy,
         )
 
     @cached_property