feat: update weather data report format

- Include actual update time in weather report
- Rename watermark worker file for clarity

This commit enhances the weather data report by
updating the format to include the actual update time
retrieved from the weather service API. Additionally,
the watermark worker file has been renamed to improve
readability and consistency in the naming convention.

app/services/ai_service.rb

@@ -50,7 +50,7 @@ class AiService
       - Temperature: #{weather_data[:temperature]}°C
       - Weather: #{weather_data[:description]}
       - Cloud cover: #{weather_data[:cloud]}%
-      - Time: Early morning
+      - Time: #{weather_data[:time]}
 
       Requirements:
       - Feature iconic landmarks or architecture from #{city.name}

app/services/weather_service.rb

@@ -31,7 +31,8 @@ class WeatherService
       pressure: data["pressure"].to_f,
       visibility: data["vis"].to_f,
       cloud: data["cloud"].to_f,
-      description: data["text"]
+      description: data["text"],
+      time: response["updateTime"]
     }
   end
 end