feat: raising hand endpoint

rooms/rooms_manager.go

@@ -13,6 +13,16 @@ import (
 
 type PersonId int
 
+func (p PersonId) MarshalBinary() ([]byte, error) {
+	bytes, err := json.Marshal(p)
+    return bytes, err
+}
+
+func (p *PersonId) UnmarshalBinary(data []byte) error {
+	err := json.Unmarshal(data, p)
+    return err
+}
+
 // TODO move to rooms i guess
 func RandomPersonId() PersonId {
 	randInt := rand.Int()
@@ -81,6 +91,7 @@ func (redisRM RedisRM) Update(ctx context.Context, roomName string, f func(fromR
 			return err
 		}
 
+		savedRoom.InitMaps()
 		room := f(savedRoom)
 
 		_, err = tx.Pipelined(ctx, func(pipe redis.Pipeliner) error {