simplay / simplay-web: UI component for print(...) calls

Developers using `simpy` are used to create output by placing `print(...)` calls within their simulations. Currently, no way exists to have these outputs within `simplay-web`.

DoD: 
- [ ] idea is elaborated and discussed
- [ ] a proposal exists of how to implement the feature, or it’s decided to not do it
- [ ] follow up tasks created