TAC: Release Announcement (#12380)

* WIP

* Store the release announcements in the account settings

* Update TAC release announcement description

* Fix settings content comparison

* Add logging in case of failure

* Watch settings changes

* I add release announcement settings to disable it

* Disable release announcement in e2e test

* Add release announcement in e2e test

* Add tests for ReleaseAnnouncementStore.ts

* Update compound-web to `3.3.0`

* Update TAC tests

* Update Labs tests

* Nits

* Add test for ReleaseAnnouncement.tsx

* Update `@vector-im/compound-web`

* Add playwright snapshot

* Delete false playwright screenshot

* Wait for EW to be displayed after reload

* Add screenshot

* Clean util file

* Renaming and comments fixing

* Use second store instead of looking in the store.

---------

Co-authored-by: R Midhun Suresh <hi@midhun.dev>

src/settings/Settings.tsx

@@ -89,6 +89,7 @@ export enum LabGroup {
     Encryption,
     Experimental,
     Developer,
+    Ui,
 }
 
 export enum Features {
@@ -98,6 +99,7 @@ export enum Features {
     OidcNativeFlow = "feature_oidc_native_flow",
     // If true, every new login will use the new rust crypto implementation
     RustCrypto = "feature_rust_crypto",
+    ReleaseAnnouncement = "feature_release_announcement",
 }
 
 export const labGroupNames: Record<LabGroup, TranslationKey> = {
@@ -114,6 +116,7 @@ export const labGroupNames: Record<LabGroup, TranslationKey> = {
     [LabGroup.Encryption]: _td("labs|group_encryption"),
     [LabGroup.Experimental]: _td("labs|group_experimental"),
     [LabGroup.Developer]: _td("labs|group_developer"),
+    [LabGroup.Ui]: _td("labs|group_ui"),
 };
 
 export type SettingValueType =
@@ -1145,6 +1148,24 @@ export const SETTINGS: { [setting: string]: ISetting } = {
         default: false,
         isFeature: true,
     },
+    /**
+     * Enable or disable the release announcement feature
+     */
+    [Features.ReleaseAnnouncement]: {
+        isFeature: true,
+        labsGroup: LabGroup.Ui,
+        supportedLevels: LEVELS_DEVICE_ONLY_SETTINGS_WITH_CONFIG,
+        default: true,
+        displayName: _td("labs|release_announcement"),
+    },
+    /**
+     * Managed by the {@link ReleaseAnnouncementStore}
+     * Store the release announcement data
+     */
+    "releaseAnnouncementData": {
+        supportedLevels: LEVELS_ACCOUNT_SETTINGS,
+        default: {},
+    },
     [UIFeature.RoomHistorySettings]: {
         supportedLevels: LEVELS_UI_FEATURE,
         default: true,