handle recursive Array from EntityChanges

[DenisCarriere]

• handle recursive Array from EntityChanges

https://github.com/streamingfast/substreams-sink-entity-changes/blob/2918fd2770b9c437e82b5d7bce19fcc45426d4df/proto/sf/substreams/sink/entity/v1/entity.proto#L27-L44

message Value {
  oneof typed {
    int32 int32 = 1;
    string bigdecimal = 2;
    string bigint = 3;
    string string = 4;
    string bytes = 5;
    bool bool = 6;

    //reserved 7 to 9;  // For future types

    Array array = 10;
  }
}

message Array {
  repeated Value value = 1;
}