Refactor streaming readers: Split into modular files and implement base class

- Removed the existing `readers.py` file and created separate modules for `FFmpegRTSPReader`, `HTTPSnapshotReader`, and utility functions.
- Introduced an abstract base class `VideoReader` to standardize the interface for video stream readers.
- Updated `FFmpegRTSPReader` and `HTTPSnapshotReader` to inherit from `VideoReader` and implement required methods.
- Enhanced logging utilities for better readability and maintainability.
- Removed `pycuda` from requirements as it is no longer needed.

core/streaming/readers/utils.py

@@ -0,0 +1,38 @@
+"""
+Utility functions for stream readers.
+"""
+import logging
+import os
+
+# Keep OpenCV errors visible but allow FFmpeg stderr logging
+os.environ["OPENCV_LOG_LEVEL"] = "ERROR"
+
+logger = logging.getLogger(__name__)
+
+# Color codes for pretty logging
+class Colors:
+    GREEN = '\033[92m'
+    YELLOW = '\033[93m'
+    RED = '\033[91m'
+    BLUE = '\033[94m'
+    PURPLE = '\033[95m'
+    CYAN = '\033[96m'
+    WHITE = '\033[97m'
+    BOLD = '\033[1m'
+    END = '\033[0m'
+
+def log_success(camera_id: str, message: str):
+    """Log success messages in green"""
+    logger.info(f"{Colors.GREEN}[{camera_id}] {message}{Colors.END}")
+
+def log_warning(camera_id: str, message: str):
+    """Log warnings in yellow"""
+    logger.warning(f"{Colors.YELLOW}[{camera_id}] {message}{Colors.END}")
+
+def log_error(camera_id: str, message: str):
+    """Log errors in red"""
+    logger.error(f"{Colors.RED}[{camera_id}] {message}{Colors.END}")
+
+def log_info(camera_id: str, message: str):
+    """Log info in cyan"""
+    logger.info(f"{Colors.CYAN}[{camera_id}] {message}{Colors.END}")