Activites feature

**Description**:

**Issue**: Implement Activities Feature

**Motivation**:

We're excited to introduce a "Events" feature to our app. This feature will allow users to discover, and participate in various events, enriching their experience and engagement with the community.

**Features**:

The "Events" feature will include the following functionalities:

1. **Event Creation**: Admins only can create events, providing essential information:
- Title: A brief title for the event.
- Date and Time: The date and time when the event is scheduled.
- Thumbnail URL: An image or thumbnail representing the event.
- Additional Media: Users can add links to photos or videos related to the event.

2. **Event Discovery**: A dedicated section in the app for users to explore upcoming events, sorted by date and time.

3. **Event Notifications**: When a new event is created, all users will receive a notification to inform them about the event.

4. **Event Details**: Users can click on an event to view more details, including the event title, date and time, thumbnail, and links to additional media.

5. **User-Friendly UI**: Redesign the app's user interface to seamlessly incorporate the Events feature, ensuring it's visually appealing and easy to use.