feat: Integrate Docusaurus for documentation and enhance project structure

- Added Docusaurus configuration and initial setup for documentation.
- Created multiple documentation pages covering installation, configuration, and core concepts.
- Implemented a GitHub Actions workflow for automatic deployment of documentation to GitHub Pages.
- Updated .gitignore to exclude Docusaurus build artifacts and dependencies.
- Enhanced README with a link to the online documentation.

docs/docs/advanced/gotify-notifications.md

@@ -0,0 +1,102 @@
+---
+sidebar_position: 3
+title: Gotify Notifications
+---
+
+# Gotify Notifications
+
+Gotify is a simple server for sending and receiving push notifications. GoMFT integrates with Gotify to provide real-time notifications for transfer events and system alerts.
+
+## Overview
+
+Gotify integration allows GoMFT to:
+
+- Send push notifications to your self-hosted Gotify server
+- Customize notification priority based on event importance
+- Include detailed transfer information in notifications
+- Support private and secure notification delivery
+
+## Prerequisites
+
+Before setting up Gotify notifications in GoMFT, you need:
+
+1. A running Gotify server (self-hosted)
+2. An application token from your Gotify server
+3. Network connectivity between GoMFT and the Gotify server
+
+## Configuration
+
+### Global Gotify Settings
+
+To configure Gotify notifications:
+
+1. Navigate to **Settings** > **Notification Services** > **Add New** > **Gotify**
+2. Configure the following settings:
+   - **Gotify Server URL**: The URL of your Gotify server (e.g., `https://gotify.example.com`)
+   - **Application Token**: The token for your GoMFT application in Gotify
+   - **Default Priority**: The default priority level for notifications (1-10)
+   - **Verify SSL**: Whether to verify SSL certificates (recommended for production)
+
+### Testing Gotify Connection
+
+After configuring your Gotify settings:
+
+1. Click **Test Connection** to verify connectivity with your Gotify server
+2. Click **Send Test Notification** to send a test message
+
+## Notification Content
+
+### Priority Levels
+
+Gotify uses numeric priority levels that GoMFT leverages for different event types:
+
+| Priority | Usage in GoMFT |
+|----------|----------------|
+| 1-3 | Low priority: successful transfers, routine events |
+| 4-7 | Medium priority: warnings, transfers with issues |
+| 8-10 | High priority: failed transfers, critical system issues |
+
+### Example Notifications
+
+GoMFT sends structured notifications with helpful information:
+
+#### Successful Transfer
+
+```
+Title: Transfer Completed: Daily Backup
+Message: Successfully transferred 123 files (1.45 GB) in 2:15
+Priority: 3
+```
+
+#### Failed Transfer
+
+```
+Title: Transfer Failed: Daily Backup
+Message: Error: Connection refused to destination server
+Files processed: 45/123
+Size transferred: 0.5/1.45 GB
+Priority: 8
+```
+
+## Troubleshooting
+
+### Common Issues
+
+- **Connection Refused**: Ensure the Gotify server URL is correct and accessible
+- **Authentication Failed**: Verify the Application Token is correct
+- **SSL Certificate Errors**: Check the Verify SSL setting and certificate validity
+
+### Gotify Logs
+
+To troubleshoot notification issues:
+
+1. Check the GoMFT logs: **Admin Tools** > **Logs** > filter for "gotify"
+2. Review the Gotify server logs for any errors
+3. Verify network connectivity between GoMFT and the Gotify server
+
+## Best Practices
+
+- **Use HTTPS** for your Gotify server to ensure secure communication
+- **Set Appropriate Priorities** to differentiate between routine and critical notifications
+- **Use Client Applications** on your devices to receive Gotify notifications
+- **Set Up Multiple Notification Methods** for critical events