Implement neofs-cli lib for container and object

Signed-off-by: Vladimir Avdeev <v.avdeev@yadro.com>

robot/resources/lib/python_keywords/cli/accounting.py

@@ -0,0 +1,25 @@
+from typing import Optional
+
+from .cli_command import NeofsCliCommandBase
+
+
+class NeofsCliAccounting(NeofsCliCommandBase):
+    def balance(self, wallet: str, rpc_endpoint: str, address: Optional[str] = None,
+                owner: Optional[str] = None) -> str:
+        """Get internal balance of NeoFS account
+
+        Args:
+            address:            address of wallet account
+            owner:              owner of balance account (omit to use owner from private key)
+            rpc_endpoint:       remote node address (as 'multiaddr' or '<host>:<port>')
+            wallet:             WIF (NEP-2) string or path to the wallet or binary key
+
+
+        Returns:
+            str: Command string
+
+        """
+        return self._execute(
+            'accounting balance',
+            **{param: param_value for param, param_value in locals().items() if param not in ['self']}
+        )