feat(persistence): add pinned message reactions table

packages/stream_chat_persistence/lib/src/mapper/mapper.dart

@@ -3,6 +3,7 @@ export 'event_mapper.dart';
 export 'member_mapper.dart';
 export 'message_mapper.dart';
 export 'pinned_message_mapper.dart';
+export 'pinned_message_reaction_mapper.dart';
 export 'reaction_mapper.dart';
 export 'read_mapper.dart';
 export 'user_mapper.dart';

packages/stream_chat_persistence/lib/src/mapper/pinned_message_reaction_mapper.dart

@@ -0,0 +1,29 @@
+import 'package:stream_chat/stream_chat.dart';
+import 'package:stream_chat_persistence/src/db/moor_chat_database.dart';
+
+/// Useful mapping functions for [PinnedMessageReactionEntity]
+extension PinnedMessageReactionEntityX on PinnedMessageReactionEntity {
+  /// Maps a [PinnedMessageReactionEntity] into [Reaction]
+  Reaction toReaction({User? user}) => Reaction(
+        extraData: extraData ?? {},
+        type: type,
+        createdAt: createdAt,
+        userId: userId,
+        user: user,
+        messageId: messageId,
+        score: score,
+      );
+}
+
+/// Useful mapping functions for [Reaction]
+extension PReactionX on Reaction {
+  /// Maps a [Reaction] into [ReactionEntity]
+  PinnedMessageReactionEntity toPinnedEntity() => PinnedMessageReactionEntity(
+        extraData: extraData,
+        type: type,
+        createdAt: createdAt,
+        userId: userId!,
+        messageId: messageId!,
+        score: score,
+      );
+}