Adicionando tres playlists flutter (#6904)

* Adicionando tres playlists flutter 

Deivid Willyan | Flutterando
Gostei das playlists do Deivid, acredito que acrescente muito ao material do Flutter

* lint: solve rule `blank-lines-1-0-2` fault

* chore: fix videos authorship

* format: escape markdown from resource titles

* format: use YouTube playlists instead of it first video url

* lint: solve rule `alphabetize-lists` fault

Co-authored-by: David Ordás <[email protected]>

Author: wfrsilva

Diff for: courses/free-courses-pt_BR.md

@@ -97,7 +97,10 @@
 ### Flutter
 
 * [Criando seu primeiro App com Flutter](https://app.balta.io/courses/7184) - Andre Baltieri (balta.io)
+* [Curso Arquitetura no Flutter - 2022](https://www.youtube.com/playlist?list=PLRpTFz5_57cvCYRhHUui2Bis-5Ybh78TS) - Deivid Willyan (YouTube)
 * [Curso COMPLETO de Flutter](https://youtube.com/playlist?list=PLlBnICoI-g-d-J57QIz6Tx5xtUDGQdBFB) - Flutterando (YouTube)
+* [Curso Flutter Básico \[NV1\] - 2022](https://www.youtube.com/playlist?list=PLRpTFz5_57cvo0CHf-AnojOvpznz8YO7S) - Deivid Willyan (YouTube)
+* [Curso Flutter Intermediário \[NV2\] - 2022](https://www.youtube.com/playlist?list=PLRpTFz5_57cvYvKja5Ex92aQ_HNADo4Oh) - Deivid Willyan (YouTube)
 
 
 ### Git