Add storagegroup, session and sign in neofs_cli lib

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

src/neofs_testlib/cli/neofs_cli/session.py

@@ -0,0 +1,41 @@
+from typing import Optional
+
+from neofs_testlib.cli.cli_command import CliCommand
+from neofs_testlib.shell import CommandResult
+
+
+class NeofsCliSession(CliCommand):
+    def create(
+        self,
+        rpc_endpoint: str,
+        wallet: str,
+        wallet_password: str,
+        out: str,
+        lifetime: Optional[int] = None,
+        address: Optional[str] = None,
+        json: Optional[bool] = False,
+    ) -> CommandResult:
+        """
+        Create session token.
+
+        Args:
+            address: Address of wallet account.
+            out: File to write session token to.
+            lifetime: Number of epochs for token to stay valid.
+            json: Output token in JSON.
+            wallet: WIF (NEP-2) string or path to the wallet or binary key.
+            wallet_password: Wallet password.
+            rpc_endpoint: Remote node address (as 'multiaddr' or '<host>:<port>').
+
+        Returns:
+            Command's result.
+        """
+        return self._execute_with_password(
+            "session create",
+            wallet_password,
+            **{
+                param: value
+                for param, value in locals().items()
+                if param not in ["self", "wallet_password"]
+            },
+        )