Change panel selector to built in device selector

1. The blueprint will now ask for user to select the panel from the list of ESPHome devices instead of typing it's name, in order to reduce the chance of an error
-> The old name format still supported, so this is not a breaking change.

2. If a weather entity is not provided, the blueprint will pick one weather entity available, if any.

nspanel_blueprint.yaml

@@ -44,11 +44,14 @@ The goal was to create a version that allows everyone to use the NSpanel fully l
 
     ##### MAIN NAME #####
           nspanel_name:
-            name: ESPhome Node Name
-            description: '* *"SYSTEM" - here you have to enter exactly the same **"device_name"** you entered in the Esphome file*'
-            default: [nspanel_name]
+            name: (REQUIRED) NSPanel device
+            description: '* *"SYSTEM" - Please select the ESPHome device reated to the NSPanel to be controlled by this automation*'
+            default: []
             selector:
-              text: {}
+              device:
+                filter:
+                  - integration: esphome
+                multiple: false
 
     ##### SYSTEM SETTINGS #####
           language:
@@ -2322,16 +2325,20 @@ trace:
 
 trigger_variables:
   nspanel_name_temp: !input "nspanel_name"
-  nspanel_name: "{{ nspanel_name_temp | replace('-','_') | replace(' ','_') | replace('___','_') | replace('__','_') }}"
+  nspanel_entities: "{{ device_entities(nspanel_name_temp) }}"
+  nspanel_name: >
+    {% if nspanel_entities | count > 0 %}{{ (nspanel_entities | selectattr(None, 'search', '_nextion_inited') | list | first).split('.')[1].split('_nextion_inited')[0] }}
+    {% elif nspanel_name_temp is string %}{{ nspanel_name_temp | replace('-','_') | replace(' ','_') | replace('___','_') | replace('__','_') }}
+    {% endif %}
   last_click: "sensor.{{ nspanel_name }}_last_click"
   last_click_lightsettings: "sensor.{{ nspanel_name }}_last_click_lightsettings"
   last_click_coversettings: "sensor.{{ nspanel_name }}_last_click_coversettings"
   last_click_climatesettings: "sensor.{{ nspanel_name }}_last_click_climatesettings"
   left_button: "binary_sensor.{{ nspanel_name }}_left_button"
   right_button: "binary_sensor.{{ nspanel_name }}_right_button"
-  weather_forcast_button: "binary_sensor.{{ nspanel_name }}_weather_forcast"
-  nextion_inited_trigger: "switch.{{ nspanel_name }}_nextion_inited"
-  # current_page: "sensor.{{ nspanel_name }}_current_page"
+  #weather_forcast_button: "binary_sensor.{{ nspanel_name }}_weather_forcast"
+  nextion_inited: "switch.{{ nspanel_name }}_nextion_inited"
+  #current_page: "sensor.{{ nspanel_name }}_current_page"
   current_page: "sensor.{{ nspanel_name }}_currentpage"
   hotwatercharge: !input "hotwatercharge"
   display_target_temperature: "sensor.{{ nspanel_name }}_display_target_temperature"
@@ -3123,7 +3130,11 @@ variables:
       no_name: No name
 
   ##### WEATHER ####
-  weather_entity: !input "weather_entity" # used only during the creation of weather in variables
+  weather_entity_tmp: !input "weather_entity" # used only during the creation of weather in variables
+  weather_entity: >
+    {% if weather_entity_tmp is string and weather_entity_tmp | length > 0 %} {{ weather_entity_tmp }}
+    {% elif states.weather | list | count > 0 %} {{ states.weather | map(attribute='entity_id') | list | first }}
+    {% endif %}
   temperature_units: '°'
 
   ##### Home page #####
@@ -3229,7 +3240,7 @@ trigger:
 
   ##### Reboot - Trigger "nspanel_boot_init" #####
   - platform: template
-    value_template: "{{ is_state(nextion_inited_trigger, 'on') | default(false) if nextion_inited_trigger is string else false }}"
+    value_template: "{{ is_state(nextion_inited, 'on') | default(false) if nextion_inited is string else false }}"
     for:
       seconds: 1
     id: nspanel_boot_init
@@ -3686,7 +3697,7 @@ trigger:
 ##### CLOSE - Trigger #####
 #############################################################
 
-condition: "{{ is_state(nextion_inited_trigger, 'on') | default(false) if nextion_inited_trigger is string else false }}"
+condition: "{{ is_state(nextion_inited, 'on') | default(false) if nextion_inited is string else false }}"
 
 #############################################################
 ##### START - Action #####