Notification events resolving and rendering in batches (#4722)

- Use `NotiticationService.getNotifications()` function so we resolve the events in bulk.
- Added `NotifierResolverQueue` to group the notifications to resolve based on a debounce strategy.
- Batch rendering of these events as notifications.

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/notification/NotificationData.kt

@@ -9,12 +9,14 @@ package io.element.android.libraries.matrix.api.notification
 
 import io.element.android.libraries.matrix.api.core.EventId
 import io.element.android.libraries.matrix.api.core.RoomId
+import io.element.android.libraries.matrix.api.core.SessionId
 import io.element.android.libraries.matrix.api.core.ThreadId
 import io.element.android.libraries.matrix.api.core.UserId
 import io.element.android.libraries.matrix.api.room.RoomMembershipState
 import io.element.android.libraries.matrix.api.timeline.item.event.MessageType
 
 data class NotificationData(
+    val sessionId: SessionId,
     val eventId: EventId,
     val threadId: ThreadId?,
     val roomId: RoomId,

libraries/matrix/api/src/main/kotlin/io/element/android/libraries/matrix/api/notification/NotificationService.kt

@@ -11,5 +11,5 @@ import io.element.android.libraries.matrix.api.core.EventId
 import io.element.android.libraries.matrix.api.core.RoomId
 
 interface NotificationService {
-    suspend fun getNotification(roomId: RoomId, eventId: EventId): Result<NotificationData?>
+    suspend fun getNotifications(ids: Map<RoomId, List<EventId>>): Result<Map<EventId, NotificationData>>
 }