Add sklearn integration section to the User Guide

[exalate-issue-sync]

Let's add a section to the H2O user guide about sklearn integration. [~accountid:5b153fb1b0d76456f36daced] has prepared some tutorials. [https://github.com/h2oai/h2o-tutorials/tree/master/tutorials/sklearn-integration|https://github.com/h2oai/h2o-tutorials/tree/master/tutorials/sklearn-integration]

One example of a regular estimator (e.g. RF) and one for AutoML. Let’s link back to this page from the AutoML page too (and add a note to AutoML page about sklearn integration).

[h2o-ops]

JIRA Issue Migration Info

Jira Issue: PUBDEV-7556
Assignee: hannah.tillman
Reporter: Erin LeDell
State: Resolved
Fix Version: 3.30.1.1
Attachments: N/A
Development PRs: Available

Linked PRs from JIRA

#4797