Add Urdu programming books index for C++ and HTML (#12450)

* Add Urdu programming books index for C++ and HTML

* Update books/free-programming-books-ur.md

Co-authored-by: Ajay Singh <37625112+Ajay-singh1@users.noreply.github.com>

* Update books/free-programming-books-ur.md

Co-authored-by: Ajay Singh <37625112+Ajay-singh1@users.noreply.github.com>

* fix(ur): add &rlm; markers for RTL consistency in C++ and HTML sections

* docs: add Urdu / اردو language entry to main index

* fix: reorder Urdu language entry in the resources list

---------

Co-authored-by: Ajay Singh <37625112+Ajay-singh1@users.noreply.github.com>

README.md

@@ -120,6 +120,7 @@ This project lists books and other resources grouped by genres:
 + [Thai / ไทย](books/free-programming-books-th.md)
 + [Turkish / Türkçe](books/free-programming-books-tr.md)
 + [Ukrainian / Українська](books/free-programming-books-uk.md)
++ [Urdu / اردو](books/free-programming-books-ur.md)
 + [Vietnamese / Tiếng Việt](books/free-programming-books-vi.md)
 
 ### Cheat Sheets

books/free-programming-books-ur.md

@@ -0,0 +1,14 @@
+### Index
+
+* [C++](#cplusplus)
+* [HTML](#html)
+
+
+### <a id="cplusplus"></a>C++
+ 
+* [C++ Sikhiyei (Urdu)](https://archive.org/details/CSikhiyeiUrduByAjnabiii) - Ajnabiii (PDF, HTML)&rlm;
+
+
+### HTML
+
+* [HTML In Urdu Complete Tutorial Learning Book](https://www.eislamicbook.com/html-in-urdu-complete-tutorial-learning-book/) - Abid Bashir (Translated)&rlm;