Add daily model training scripts and terminal UI for live trading

- Introduced `train_daily.sh` for automating daily model retraining, including data download and model training steps.
- Added `install_cron.sh` for setting up a cron job to run the daily training script.
- Created `setup_schedule.sh` for configuring Systemd timers for daily training tasks.
- Implemented a terminal UI using Rich for real-time monitoring of trading performance, including metrics display and log handling.
- Updated `pyproject.toml` to include the `rich` dependency for UI functionality.
- Enhanced `.gitignore` to exclude model and log files.
- Added database support for trade persistence and metrics calculation.
- Updated README with installation and usage instructions for the new features.

live_trading/db/__init__.py

@@ -0,0 +1,13 @@
+"""Database module for live trading persistence."""
+from .database import get_db, init_db
+from .models import Trade, DailySummary, Session
+from .metrics import MetricsCalculator
+
+__all__ = [
+    "get_db",
+    "init_db",
+    "Trade",
+    "DailySummary",
+    "Session",
+    "MetricsCalculator",
+]