Adding Embedded Systems Fundamentals Course pt_BR (#8453)

* Adding Embedded Systems Fundamentals Course

* Update courses/free-courses-pt_BR.md

Co-authored-by: Sharan J <50091666+shrn01@users.noreply.github.com>

Co-authored-by: Sharan J <50091666+shrn01@users.noreply.github.com>

courses/free-courses-pt_BR.md

@@ -37,6 +37,7 @@
 * [Sass](#sass)
 * [Segurança da Informação](#segurança-da-informação)
 * [Shell](#shell)
+* [Sistemas Embarcados](#sistemas-embarcados)
 * [Swift](#swift)
 * [TypeScript](#typescript)
     * [Angular](#angular)
@@ -337,6 +338,11 @@
 * [Curso Shell GNU](https://www.youtube.com/playlist?list=PLXoSGejyuQGqJEEyo2fY3SA-QCKlF2rxO) - debxp (YouTube)
 
 
+### Sistemas Embarcados
+
+* [Fundamentos de Sistemas Embarcados](https://www.youtube.com/playlist?list=PLqvo6YdcIqXXGY1dLbf_xA-JLMBumTyzG) - Renato Sampaio
+
+
 ### Swift
 
 * [Aprendendo Swift do Iniciante ao Avançado. (Mac e Windows)](https://www.udemy.com/aprendendoswift3/) - Lucas Alencar (Udemy)