MM-57326: [Shared Channels] Message priority, acknowledgement and persistent notifications need to be synced (#30736)

server/channels/store/store.go

@@ -1035,6 +1035,8 @@ type SharedChannelStore interface {
 type PostPriorityStore interface {
 	GetForPost(postID string) (*model.PostPriority, error)
 	GetForPosts(ids []string) ([]*model.PostPriority, error)
+	Save(priority *model.PostPriority) (*model.PostPriority, error)
+	Delete(postID string) error
 }
 
 type DraftStore interface {
@@ -1053,8 +1055,12 @@ type PostAcknowledgementStore interface {
 	Get(postID, userID string) (*model.PostAcknowledgement, error)
 	GetForPost(postID string) ([]*model.PostAcknowledgement, error)
 	GetForPosts(postIds []string) ([]*model.PostAcknowledgement, error)
-	Save(postID, userID string, acknowledgedAt int64) (*model.PostAcknowledgement, error)
+	GetForPostSince(postID string, since int64, excludeRemoteID string, inclDeleted bool) ([]*model.PostAcknowledgement, error)
+	GetSingle(userID, postID, remoteID string) (*model.PostAcknowledgement, error)
+	SaveWithModel(acknowledgement *model.PostAcknowledgement) (*model.PostAcknowledgement, error)
+	BatchSave(acknowledgements []*model.PostAcknowledgement) ([]*model.PostAcknowledgement, error)
 	Delete(acknowledgement *model.PostAcknowledgement) error
+	BatchDelete(acknowledgements []*model.PostAcknowledgement) error
 }
 
 type PostPersistentNotificationStore interface {