[docs] Revamp of feature guides

[leoniewgnr]

See here for detailed description of changes: #1297

Open todos

• get through all feature guides to check that they don't throw any error
• new structure
• improve global local tutorial
• improve cross-validation
• fix live plot

For a later commit

• extend multiplicative seasonality
• add regularization tutorial
• add Multi-step-forecasting

Close #767

[github-actions]

Model Benchmark

Benchmark	Metric	main	current	diff
AirPassengers	MAE_val	13.0626	13.0626	0.0%	✅
AirPassengers	RMSE_val	15.9453	15.9453	0.0%	✅
AirPassengers	Loss_val	0.00131	0.00131	0.0%	✅
AirPassengers	MAE	9.88156	9.88156	0.0%	✅
AirPassengers	RMSE	11.7354	11.7354	0.0%	✅
AirPassengers	Loss	0.00052	0.00052	0.0%	✅
AirPassengers	time	6.50284	7.68	18.1%	❌
YosemiteTemps	MAE_val	1.3442	1.3442	0.0%	✅
YosemiteTemps	RMSE_val	2.00245	2.00245	0.0%	✅
YosemiteTemps	Loss_val	0.00077	0.00077	0.0%	✅
YosemiteTemps	MAE	1.3192	1.3192	0.0%	✅
YosemiteTemps	RMSE	2.13518	2.13518	0.0%	✅
YosemiteTemps	Loss	0.00064	0.00064	0.0%	✅
YosemiteTemps	time	80.4575	105.3	30.88%	❌
PeytonManning	MAE_val	0.58159	0.58159	0.0%	✅
PeytonManning	RMSE_val	0.72216	0.72216	0.0%	✅
PeytonManning	Loss_val	0.01239	0.01239	0.0%	✅
PeytonManning	MAE	0.41671	0.41671	0.0%	✅
PeytonManning	RMSE	0.55961	0.55961	0.0%	✅
PeytonManning	Loss	0.00612	0.00612	0.0%	✅
PeytonManning	time	16.7965	17.96	6.93%	⚠️

Model training plots

Model Training

PeytonManning

YosemiteTemps

AirPassengers

[codecov-commenter]

Codecov Report

Merging #1301 (26ad770) into main (45111be) will not change coverage.
The diff coverage is n/a.

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@@           Coverage Diff           @@
##             main    #1301   +/-   ##
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  Coverage   89.82%   89.82%           
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  Files          38       38           
  Lines        5142     5142           
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  Hits         4619     4619           
  Misses        523      523           

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[noxan]

Oh, I love it - amazing work @leoniewgnr and thanks for wrapping up the docs 👏