Add weather app to demos

[AJBrownson]

Description

• Adding a new demo application in the /demos folder
• Addressing hacktoberfest issue: 🤩 Create Weather App (Hacktoberfest Demo) #2566
• Elemental is a weather app that gets the current user's location and shows the weather information for that location. It also allows users to search for weather information by city name. It uses the OpenWeather API to retrieve weather data and the Tolgee API to provide translations.

Key Features:

• Text Translation
• Weather Information
• Search by City Name
• Responsive Design

Screenshots

Checklist

• [✓] I have read the Contribution Guide
• [✓] If the PR changes or adds functionality, I have updated the relevant documentation
• [✓] Translate all labels in the App with Tolgee
• [✓] Store the project into /demos folder
• [✓] Add a screenshot or video demo to the PR
• [ ] Write a short article describing your demo app on DEV.to or your blog
• [✓] Please show your support and give a ⭐ to the Tolgee repository