Add guide for scikit-learn

[david-cortes-intel]

Adds an entry for scikit-learn workflows.

CC @napetrov @avolkov-intel @Vika-F @razdoburdin for review.

[rsiyer-intel]

Hi, Thanks for the content!
Please consider adding a table of contents on the top with links to the sections and subsections. Similar to this document -
https://github.com/intel/optimization-zone/blob/main/software/kafka/README.md

Consider breaking the parallelism section into sub sections.
Also, make sure headings are nested correctly based on content hierarchy.

Also, please correct the following typos -
inerence → inference
README.md:3

pakage → package
README.md:25

duplicated word: that that
README.md:371

apriori → a priori
README.md:391

Ofentimes → Oftentimes
README.md:411

continuosly → continuously
README.md:411

preferrable → preferable
README.md:432

akind → akin
README.md:439

preferrable → preferable
README.md:457

[david-cortes-intel]

Added a table of contents and fixed the typos.

Consider breaking the parallelism section into sub sections.

Please suggest a logical breakdown if you find the current one is not appropriate.