Add support for option descriptions in config flows (#26825)

* Add support for option descriptions in config flows

* use `twoline`

* remove unused classes

src/dialogs/config-flow/show-dialog-data-entry-flow.ts

@@ -137,6 +137,12 @@ export interface FlowConfig {
     option: string
   ): string;
 
+  renderMenuOptionDescription(
+    hass: HomeAssistant,
+    step: DataEntryFlowStepMenu,
+    option: string
+  ): string;
+
   renderLoadingDescription(
     hass: HomeAssistant,
     loadingReason: LoadingReason,