Add OptionsFlow helper class (#82531)

* Add OptionsFlow helper classes

* More integrations

* Adjust SchemaOptionsFlowHandler

* Use single class

* Simplify access to options

* Reduce PR

* Make _options private

* Add test

homeassistant/config_entries.py

@@ -5,6 +5,7 @@ import asyncio
 from collections import ChainMap
 from collections.abc import Callable, Coroutine, Generator, Iterable, Mapping
 from contextvars import ContextVar
+from copy import deepcopy
 from enum import Enum
 import functools
 import logging
@@ -1672,11 +1673,20 @@ class OptionsFlowManager(data_entry_flow.FlowManager):
 
 
 class OptionsFlow(data_entry_flow.FlowHandler):
-    """Base class for config option flows."""
+    """Base class for config options flows."""
 
     handler: str
 
 
+class OptionsFlowWithConfigEntry(OptionsFlow):
+    """Base class for options flows with config entry and options."""
+
+    def __init__(self, config_entry: ConfigEntry) -> None:
+        """Initialize options flow."""
+        self.config_entry = config_entry
+        self._options = deepcopy(dict(config_entry.options))
+
+
 class EntityRegistryDisabledHandler:
     """Handler to handle when entities related to config entries updating disabled_by."""