Timezone support on Blueprint

Still pending the code on ESPHome to store for when WiFi is out
Pending API doc.
I haven't merged this in another service for now to not break the API, but this should be done for v4.4.0

Solves #2024

esphome/nspanel_esphome_core.yaml

@@ -871,6 +871,19 @@ api:
               }
             }
 
+    - service: set_timezone  # To do: Merge this on another init service for v4.4.0
+      variables:
+        timezone: string
+      then:
+        - lambda: |-
+            if (!timezone.empty()) {
+              time_provider->dump_config();
+              ESP_LOGI("api.service.set_timezone", "Setting timezone: %s", timezone.c_str());
+              time_provider->set_timezone(timezone.c_str());
+              time_provider->call_setup();
+              time_provider->dump_config();
+            }
+
     # Wake Up Service
     - service: wake_up
       variables: