Dev/skforecast bump optim dynamics

[davidusb-geek]

Two main tasks on this development stage:

• Bumping version of skforecast from 0.6.0 to 0.8.0. Doing this mainly implies changing how the exogenous data is passed to fit and predict methods.
• 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

[codecov]

Codecov Report

Merging #80 (df86537) into master (3907b89) will increase coverage by 0.01%.
The diff coverage is 91.30%.

@@            Coverage Diff             @@
##           master      #80      +/-   ##
==========================================
+ Coverage   87.93%   87.94%   +0.01%     
==========================================
  Files           6        6              
  Lines        1392     1402      +10     
==========================================
+ Hits         1224     1233       +9     
- Misses        168      169       +1     

Impacted Files	Coverage Δ
src/emhass/command_line.py	82.63% <ø> (ø)
src/emhass/forecast.py	91.29% <ø> (ø)
src/emhass/machine_learning_forecaster.py	89.86% <85.71%> (-0.28%)	⬇️
src/emhass/optimization.py	88.62% <100.00%> (+0.21%)	⬆️