[FIX] 926 auto ensure all models support alias and 924 Configuring hyperparameter space for Auto* Models

[elephaint]

Fixes #926 and fixes #924.

• Fix of #926: Fixed Auto models that do not support all required variables from BaseAuto Add unit test to all Auto models to test if the Auto* models contain all required variables from BaseAuto Some reformatting of models.ipynb, putting unit tests per model in hidden cell below each model
• Fix of #924: Added a get_default_config method for all Auto* models Fixed incompatible hyperparameter configurations in default_config and in three base models Added unit tests to all auto models to ensure they all run with default configs, on both backends. Update of Hyperparameter tuning guide to demonstrate the use of get_default_config

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[elephaint]

LGTM! Let's just please also wait for @cchallu's review as well.

Thanks - it does not fix the default_config issue yet, so I'm changing a few things (converted to draft)

[elephaint]

• Added a get_default_config method for all Auto* models
• Fixed incompatible hyperparameter configurations in base models
• Added unit tests to all auto models to ensure they all run with default configs, on both backends.
• Update of Hyperparameter tuning guide to demonstrate the use of get_default_config