Basic Software Architecture

• decide on design pattern fitting to the UDF idea of Compose (interesting reads: https://proandroiddev.com/architecture-in-jetpack-compose-mvp-mvvm-mvi-17d8170a13fd, https://www.ericthecoder.com/2020/07/20/battle-of-the-android-architectures-mvp-vs-mvvm-vs-mvi/)
• decide on use of other third-party libraries to support design (e.g. Decompose, #25)
• restructure "root" function calls in BriarService
• (maybe) take later portability of parts of the code to Android/other platforms into account