Phone system part 6- chat app start (Patreon)

This weekend I've worked some more on the sms system but, I realized that it have gotten too complicated to expand upon without constantly causing bugs.
Using renpy's `creator defined statements` to make it like scripting a normal dialogue was fun and all, but I've decided to come up with a more robust solution to the conversations and for that, it needs to advance independent of the script, therefore, we're back to lists. This time I've planned for the conversations to be added with appending the lists as the story advances, this way we can have different situations based on the story. I'll explain this more when it's time comes though.
Fortunately with the experience I've gained from the sms system, planning a chat application with chat rooms that have multiple people on them was easy. I've put together the basic look as an additional app icon and got it ready for the code to be added.
However, starting the app doesn't mean that we're not going to have a vote on what to work on first. I've started the chat app because I need to overhaul the sms classes eventually and the chat app classes give me a head start.

As promised, in the next post tonight, I'll ask what you want me to work on next, but for this weekend's progress, check out the attachments
Edit; Looks like I've forgotten attaching the zip file, sorry about that. it's now added