Add option to change font size in the Talk Android app

[juro200]

Hi, I’d like to suggest a feature to adjust the font size in the Talk Android app. This would improve readability, especially for users with visual difficulties. Currently, the app relies only on system font settings, but an in-app option (like small / medium / large) would be very useful. Thanks!

[mahibi]

might be done, but no priority atm. (I guess it makes sense to wait until Jetpack Compose is finished)

[sylvaticus]

I support this, or at least increase the default font. For some reason, the text in this app is smaller than the "normal" font in similar apps (Signal, WhatsApp...) making the chat conversation difficult to read..