Add(platform): intro and resources for platform engineering

[kareem-elsayed]

This pull request introduces an Introduction to Platform Engineering section along with curated resources to provide readers with a comprehensive understanding of the field.
The update is aimed at helping both newcomers and experienced engineers get acquainted with the principles, tools, and practices involved in platform engineering.

[aabouzaid]

@kareem-elsayed thanks for your addition, great start 🙌

Please note that generated content is not accepted at this point.

Please rewrite the content and use the same style used in the foundations (What you need to know then 5-10 points, then followed by Resources).

[kareem-elsayed]

Hey @aabouzaid, thanks for the feedback,

Looks like during the reformatting the context has been messed up by AI since I'm using it for reformatting and for proper sentence grammatical construction, so I will re-enhance this.

but there will be still remaining some footprints for AI's tooling (Grammarly, ChatGPT, and Copilot) if that violates the rules of contribution (I couldn't find anywhere the how-to for contribution) please let me know, and also you can feel free to close the PR

[aabouzaid]

@kareem-elsayed All AI detectors (GPTZero, QuillBot, Scribbr) showed between 95% to 100% of the text generated by AI which is hard to accept that level.

Grammarly should be fine for proofreading (not generating).

I don't mind AI in general, but at this point, I'd like to have genuine human content that comes from actual experience (especially since it's a roadmap and the content is relatively small compared to a course or so).