Implement neofs-cli lib

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

src/neofs_testlib/cli/neofs_cli/accounting.py

@@ -0,0 +1,30 @@
+from typing import Optional
+
+from neofs_testlib.cli.cli_command import CliCommand
+from neofs_testlib.shell import CommandResult
+
+
+class NeofsCliAccounting(CliCommand):
+    def balance(
+        self,
+        wallet: Optional[str] = None,
+        rpc_endpoint: Optional[str] = None,
+        address: Optional[str] = None,
+        owner: Optional[str] = None,
+    ) -> CommandResult:
+        """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:
+            Command's result.
+
+        """
+        return self._execute(
+            "accounting balance",
+            **{param: value for param, value in locals().items() if param not in ["self"]},
+        )