Add Python application for real-time PRB prediction and automated resource optimization

Add Python application for real-time PRB prediction and automated resource optimization

- Implement Flask-based web service for PRB prediction with LSTM model integration
- Add real-time inference and automated slice resource optimization via RAN NSSMF
- Implement notification-driven architecture for event-based processing
- Add Service Management Environment (SME) API for dynamic InfluxDB endpoint discovery
- Include comprehensive error handling, thread safety, and logging
- Add requirements.txt with all necessary dependencies
- Update README.md with complete application documentation and deployment guide

Change-Id: I396c6e6e11a2b60b1b0c58dd7df12d2a45ad0cd5
Signed-off-by: sunil.n <sunil.n@samsung.com>