Move Practical Guide to Bare Metal C++ into the main README books section (#1779)

* Initial plan

* Add bare metal C++ book entry

Co-authored-by: fffaraz <895678+fffaraz@users.noreply.github.com>

* Move bare metal C++ entry to README

Co-authored-by: fffaraz <895678+fffaraz@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: fffaraz <895678+fffaraz@users.noreply.github.com>

Author: Copilot

README.md

@@ -1570,6 +1570,7 @@ A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny
 * [List of Free C or C++ Books](https://github.com/fffaraz/awesome-cpp/blob/master/books.md)
 * [Free C Books](https://github.com/EbookFoundation/free-programming-books/blob/main/books/free-programming-books-langs.md#c) - vhf/free-programming-books/C.
 * [Free C++ Books](https://github.com/EbookFoundation/free-programming-books/blob/main/books/free-programming-books-langs.md#cpp) - vhf/free-programming-books/C++.
+* [Practical Guide to Bare Metal C++](https://github.com/arobenko/bare_metal_cpp)
 * [cppbestpractices](https://github.com/lefticus/cppbestpractices) - Collaborative Collection of C++ Best Practices.
 
 ## Coding Standards