Group Chats

RPC Calls

`confirmJoiningGroup`

%* [chatId])

`leaveGroupChat`

%* [nil, chatId, true])

`changeGroupChatName`

%* [nil, chatId, newName])

`createGroupChatWithMembers`

%* [nil, groupName, pubKeys])

`addMembersToGroupChat`

%* [nil, chatId, pubKeys])

`removeMemberFromGroupChat`

%* [nil, chatId, pubKey])

`addAdminsToGroupChat`

%* [nil, chatId, [pubKey]])