Emhass

Improvement
- Added forecasts for unit_prod_price and unit_load_cost.
- Improved documentation.
Fix
- Bump skforecast from 0.8.0 to 0.8.1

Improvement
- Adding new constraints to limit the dynamics (kW/sec) of deferrable loads and battery power. The LP formulation works correctly and a work should be done on integrating the user input parameters to control this functionality.
- Added new constraint to avoid battery discharging to the grid.
- Added possibility to set the logging level.
Fix
- Bumped version of skforecast from 0.6.0 to 0.8.1. Doing this mainly implies changing how the exogenous data is passed to fit and predict methods.
- Fixed wrong path for csv files when using load cost and prod price forecasts.

Fix
- Fixed wrong name of new cost sensor.
- Fixed units of measurements of costs to €/kWh.
- Added color sequence to plot figures, now avery line should be plotted with a different color.

Fix
- Updated default value for total number of days for ML model training.
- Added publish of unit_load_cost and unit_prod_price sensors.
- Improved docs intro.
- Bump myst-parser from 0.18.1 to 1.0.0

Fix
- Fixed to correct index length for ML forecaster prediction series.

Fix
- Fixed wrong column name for var_load when using predict with ML forecaster.