Sebastian Troitzsch

Implement trust-region algorithm for operation problem solution. - [x] Check existing code in `examples/development/run_electric_grid_optimal_power_flow_trust_region.py` - [x] Revise implementation to work with latest linear model changes (change values -> absolute values)...

Introduce checks in `data_interface` such that definition issues are caught early and raise clear error messages. - [x] List down typical definition issues @tomschelo @cdesmond - [ ] Setup check...