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/sensor.yaml

@@ -20,7 +20,7 @@ sensor:
           {% set days = ['Montag,', 'Dienstag,', 'Mittwoch,', 'Donnerstag,', 'Freitag,', 'Samstag,', 'Sonntag,', 'Montag,'] %}
           {{(as_timestamp(now())+ (86400)) | timestamp_custom(days[now().weekday()+1] ~ '  %d.%m') }}
         icon_template: mdi:calendar-range
-        
+
   - platform: template
     sensors:
       wochentag02:
@@ -75,4 +75,4 @@ sensor:
       nspanel_lea_target_temp:
         unique_id: e8e61ff7-3a41-47ad-bd6c-303f730de96f
         friendly_name: NSPanel Lea Target Temp
-        value_template: "{{ state_attr('climate.nspanel_lea', 'temperature') }}"
+        value_template: "{{ state_attr('climate.nspanel_lea', 'temperature') }}"