Add a "messages" property to PurpleConversation
Review Request #2590 — Created Aug. 29, 2023 and submitted
This is a GListModel that can be used in the ui's for handling history. Right now it is a simple GListStore, but the idea is that in the future we will have a PurpleHistoryListStore or something that will only keep a subset of the messages in memory and then update according to the backing store when necessary.
Ran the unit tests.