added new resource in data science (#5681)

* Added Two new resources in free-courses-en.md

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* Added A new tutorial resource in free-programming-interactive-tutorial-en.md

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* Added new resource for data science

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more/free-programming-interactive-tutorials-en.md

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 ### Data Science
 
+* [Data Science Foundations - IBM SkillBuild](https://skillsbuild.org/students/course-catalog/data-science) *(Email login reqired to access the course)*
 * [Essential Linear Algebra for Data Science and Machine Learning](https://www.kdnuggets.com/2021/05/essential-linear-algebra-data-science-machine-learning.html) -KDnuggets
 * [Top 10 Data Science Projects for Beginners - KDnuggets](https://www.kdnuggets.com/2021/06/top-10-data-science-projects-beginners.html)