Conversation.v2 constructor

*[<Null safety>](https://dart.dev/null-safety)*

Conversation.v2(InvitationV1 invite, DateTime createdAt, {required EthereumAddress me, required EthereumAddress peer})

Implementation

Conversation.v2(
  this.invite,
  this.createdAt, {
  required this.me,
  required this.peer,
})  : version = xmtp.Message_Version.v2,
      topic = invite.topic,
      conversationId = invite.context.conversationId,
      metadata = invite.context.metadata;