Refactor API route setup and enhance modularity

- Consolidated API route definitions by registering routes from separate modules for better organization and maintainability.
- Removed redundant route definitions from the APIServer class, improving code clarity.
- Updated camera monitoring and recording modules to utilize a shared context manager for suppressing camera SDK errors, enhancing error handling.
- Adjusted timeout settings in camera operations for improved reliability during frame capture.
- Enhanced logging and error handling across camera operations to facilitate better debugging and monitoring.

camera-management-api/usda_vision_system/camera/constants.py

@@ -0,0 +1,30 @@
+"""
+Constants for camera operations.
+"""
+
+# Timeouts (milliseconds)
+CAMERA_GET_BUFFER_TIMEOUT = 200  # Standard frame capture timeout
+CAMERA_INIT_TIMEOUT = 1000  # Camera initialization timeout
+CAMERA_TEST_CAPTURE_TIMEOUT = 1000  # Test capture timeout
+CAMERA_GET_BUFFER_SHORT_TIMEOUT = 100  # Shorter timeout for quick checks
+
+# Frame queue sizes
+MJPEG_QUEUE_MAXSIZE = 5  # Buffer for latest frames (for MJPEG streaming)
+RTSP_QUEUE_MAXSIZE = 10  # Buffer for RTSP frames (larger buffer for smoother streaming)
+RECORDING_QUEUE_MAXSIZE = 30  # Buffer for recording frames (shared with recorder)
+
+# Frame rates (FPS)
+PREVIEW_FPS = 10.0  # Lower FPS for preview to reduce load
+RTSP_FPS = 15.0  # RTSP FPS (can be higher than MJPEG preview)
+DEFAULT_VIDEO_FPS = 30.0  # Default video FPS when target_fps is 0 or unspecified
+
+# Sleep intervals (seconds)
+STREAMING_LOOP_SLEEP = 0.1  # Sleep interval in streaming loops when waiting
+BRIEF_PAUSE_SLEEP = 0.1  # Brief pause before retrying operations
+
+# JPEG quality (0-100)
+PREVIEW_JPEG_QUALITY = 70  # JPEG quality for streaming preview
+
+# Video writer buffer size
+VIDEO_WRITER_CHUNK_SIZE = 8192  # Buffer size for video writer operations
+