provide a backtesting market coupling example

Request Summary

Currently only a demo scenario which applies the market coupling feature is available. Provide a "real-world" backtesting example which makes use of the market coupling feature. The Austrian market zone could act as an showcase for this, as the current results could be improved (see !64 (comment 2729656170)).

Use case

Provide a comprehensive scenario which uses the market coupling feature while also improving the fit with historical market data.