Replace outdated daal4py docs with redirect to scikit-learn-intelex (#10)

* Replace outdated daal4py docs with redirect to scikit-learn-intelex

daal4py is now part of the scikit-learn-intelex package and has been
deprecated in favor of sklearnex. The documentation has moved to:
https://uxlfoundation.github.io/scikit-learn-intelex/2025.5/about_daal4py.html

This change removes all outdated daal4py documentation and replaces it
with a simple redirect page that automatically sends users to the new
location in the scikit-learn-intelex documentation.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

* Fix scikit-learn-intelex version

* Add individual redirect pages for all daal4py documentation pages

Instead of removing all old pages and redirecting only the index,
this creates specific redirect pages for each major documentation
section, improving user experience and maintaining backward
compatibility:

- algorithms.html -> daal4py.html (API reference)
- sklearn.html -> patching.html (sklearnex integration)
- model-builders.html -> model_builders.html
- streaming.html -> about_daal4py.html#streaming-mode
- scaling.html -> distributed_daal4py.html
- data.html -> daal4py.html (API reference)
- examples.html -> about_daal4py.html#using-daal4py
- contents.html -> about_daal4py.html
- genindex.html -> daal4py.html (API reference)
- search.html -> about_daal4py.html

Benefits:
- Preserves bookmarks and external links
- Better SEO (search engines can update indexes properly)
- Users land on the most relevant content for their original intent
- Each redirect uses canonical links and meta refresh tags

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

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Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: maria-Petrova