Revert "Deprecate Toshiba solvers (#557)" (#559)

This reverts commit 2722efd.

Author: xinyi-joffre

azure-quantum/azure/quantum/optimization/__init__.py

@@ -0,0 +1,11 @@
+# coding=utf-8
+##
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+##
+
+from .term import *
+from .problem import *
+from .streaming_problem import *
+from .online_problem import *
+from azure.quantum.target.solvers import *

azure-quantum/azure/quantum/optimization/online_problem.py

@@ -0,0 +1,21 @@
+import logging
+from typing import TYPE_CHECKING
+from azure.quantum.optimization import Problem
+
+logger = logging.getLogger(__name__)
+
+__all__ = ["OnlineProblem"]
+
+if TYPE_CHECKING:
+    from azure.quantum.workspace import Workspace
+
+
+class OnlineProblem(object):
+    def __init__(self, name: str, blob_uri: str, **kw):
+        super(OnlineProblem, self).__init__(**kw)
+        self.name = name
+        self.uploaded_blob_uri = blob_uri
+
+    def download(self, workspace: "Workspace") -> Problem:
+        logger.warning("The problem will be downloaded to the client")
+        return Problem.download(self, workspace)