Room List Store: Save preferred sorting algorithm and use that on app launch (#29493)

* Add `type` property to Sorter

So that we can uniquely identify any given sorting algorithm.

* Add a getter for the active sort algorithm

* Define a setting to store the sorting algorithm

* Add a method to resort the list of rooms

- Just one method where you specify the sorting algorithm by type.
- Persist the new sorting algorithm using SettingsStore.

* On startup, use preferred sorter

* Add tests

src/settings/Settings.tsx

@@ -44,6 +44,7 @@ import { type ReleaseAnnouncementData } from "../stores/ReleaseAnnouncementStore
 import { type Json, type JsonValue } from "../@types/json.ts";
 import { type RecentEmojiData } from "../emojipicker/recent.ts";
 import { type Assignable } from "../@types/common.ts";
+import { SortingAlgorithm } from "../stores/room-list-v3/skip-list/sorters/index.ts";
 
 export const defaultWatchManager = new WatchManager();
 
@@ -311,6 +312,7 @@ export interface Settings {
     "lowBandwidth": IBaseSetting<boolean>;
     "fallbackICEServerAllowed": IBaseSetting<boolean | null>;
     "showImages": IBaseSetting<boolean>;
+    "RoomList.preferredSorting": IBaseSetting<SortingAlgorithm>;
     "RightPanel.phasesGlobal": IBaseSetting<IRightPanelForRoomStored | null>;
     "RightPanel.phases": IBaseSetting<IRightPanelForRoomStored | null>;
     "enableEventIndexing": IBaseSetting<boolean>;
@@ -1114,6 +1116,10 @@ export const SETTINGS: Settings = {
         displayName: _td("settings|image_thumbnails"),
         default: true,
     },
+    "RoomList.preferredSorting": {
+        supportedLevels: [SettingLevel.DEVICE],
+        default: SortingAlgorithm.Recency,
+    },
     "RightPanel.phasesGlobal": {
         supportedLevels: [SettingLevel.DEVICE],
         default: null,