Add validation actions (#693)

* Add validation action

* Clean-up yaml

Removed trailing spaces

* Clean-up yaml

Removed trailing spaces

* Clean-up yaml

Removed trailing spaces

* Clean-up yaml

Removed trailing spaces

* Clean-up yaml

Removed trailing spaces

* Update validate_yaml.yml

* Validate on push

Only for nspanel_esphome.yaml and nspanel_blueprint.yaml

* Extending warnings for +255-char lines

* Update validate_yaml.yml

* Clean-up yaml

* Update validate_yaml.yml

* Clean-up yaml

* Clean-up yaml

* Clean-up yaml

* Clean-up yaml

* Clean-up yaml

* Update and rename validate_yaml.yml to validate_blueprint.yml

* Create validate_esphome.yml

* Clean-up yaml

custom_configuration/folder_watcher.yaml

@@ -1,7 +1,7 @@
-# Please insert into the default file "configuration.yaml  
+# Please insert into the default file "configuration.yaml"
 # Folder must be changed to the directory where the tft file (Nextion Editor) will be uploaded
 ###########
 #
 #Folder watcher for NS panel auto upload tft
 folder_watcher:
-  - folder: /config/www/nspanel/
+  - folder: /config/www/nspanel/