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[AnFreTh]

This pull request includes several changes to the README.md file, version updates, and new feature additions to the mambular package. The most important changes include adding new models to the documentation, updating import paths, adding a new class for feature interaction, and updating the version number.

Model updates:

• mambular/models: Added AutoInt and Trompt models to the list of available models

ReadMM updates:

• README.md: Updated instructions for specifying preprocessor arguments in random_search.

Import path updates:

• README.md: Changed import paths for BaseModel and SklearnBaseRegressor to use the utils submodule. [1] [2]

New feature additions:

• mambular/arch_utils/enode_utils.py: Added a new class ODSTE for Oblivious Differentiable Sparsemax Trees and a new class DenseBlock for stacking attention layers and ODSTE layers.
• mambular/arch_utils/layer_utils/importance.py: Added a new class ImportanceGetter for computing feature importance.

Version update:

• mambular/__version__.py: Updated the version number from 1.2.1 to 1.3.0.