Add base support for sub entries (#23160)

* Add base support for sub entries

* add demo types

* fix translations

* Use sub entry name when deleting

* Update show-dialog-sub-config-flow.ts

* adjust for multiple sub types

* WIP, not functional

* add subentry_type

* rename to supported_subentry_types

* config_subentries -> config_entries_subentries

* Add localized sub flow title

* use Record

* rename

* more rename

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

@@ -148,7 +148,6 @@ export interface DataEntryFlowDialogParams {
   }) => void;
   flowConfig: FlowConfig;
   showAdvanced?: boolean;
-  entryId?: string;
   dialogParentElement?: HTMLElement;
   navigateToResult?: boolean;
 }