Feature request: add listAll method to get both group and direct conversations as in react native sdk

[AlejoLovallo]

Is your feature request related to a problem?

I find it unhelpful to not have a unified method to get all conversations for both xmtp-js and mls-client.

Describe the solution to the problem

I noticed that this method is already available for the react native SDK

For instance: https://github.com/xmtp/xmtp-react-native/blob/main/android/src/main/java/expo/modules/xmtpreactnativesdk/XMTPModule.kt#L555

Describe the uses cases for the feature

No response

Additional details

No response

[rygine]

the browser and node SDKs will list both group and DM conversations with the .list() method on Conversations.