Message Metadata: Allow update via action?

[WalrusSoup]

Right now, the message actions only allow three keys:
reactions, deleted, edited.

When edited is used, it is pretty much hard coded to only be text in the chatsdk. It would be nice if we could add another key, metadata to allow us to pipe through metadata updates on the original message.

[parfeon]

Thank you for reaching out to us!

I think it will be more productive to have these questions in the repo which actually built wrapper around the core SDK (this repo): https://github.com/pubnub/kmp-chat/issues