Contributing more "building blocks"

Hi AutoML team, I can chip in some code and add more algorithm "building blocks" to autosklearn. For example, I can add Factorization Machines for classification problems.

What is a good place to start with this? Any code-traditions that you would like me to follow?

The issue does not name a file, entry point, test, or established contribution path. Start by reviewing the auto-sklearn algorithm-component structure and existing classification components, then identify the project’s contribution guidance and tests; done would mean a Factorization Machines component is integrated and covered by the relevant tests.

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