Release v1.2.4: Daily Precipitation & 15-Min Radar (Beta)

New Features:
Daily Precipitation Sensor: Added a numeric sensor that displays the total accumulated and forecasted precipitation for the current day (L/m²).
"Is Raining" Beta Sensor: Added an experimental sensor based on minutely_15 radar data. It provides the current rain status along with predictive attributes for the next 15 minutes (next_15_min_status). Note: This sensor is disabled by default.

Improvements & Fixes:
Smarter Rain Detection: The main "Is Raining" sensor now reacts instantly. It directly evaluates WMO weather codes (e.g., it recognizes drizzle Code 51), eliminating the lag caused by waiting for a measurable volume of water.
Code Optimization: The sensor architecture in sensor.py has been modularized. API calls were unified to extract current, daily, and minutely_15 data simultaneously, without generating additional requests to Open-Meteo.