Implement video processing module with FFmpeg conversion, OpenCV metadata extraction, and file system repository

- Added FFmpegVideoConverter for video format conversion using FFmpeg.
- Implemented NoOpVideoConverter for scenarios where FFmpeg is unavailable.
- Created OpenCVMetadataExtractor for extracting video metadata.
- Developed FileSystemVideoRepository for managing video files in the file system.
- Integrated video services with dependency injection in VideoModule.
- Established API routes for video management and streaming.
- Added request/response schemas for video metadata and streaming information.
- Implemented caching mechanisms for video streaming.
- Included error handling and logging throughout the module.

usda_vision_system/video/application/__init__.py

@@ -0,0 +1,14 @@
+"""
+Video Application Layer.
+
+Contains use cases and application services that orchestrate domain logic
+and coordinate between domain and infrastructure layers.
+"""
+
+from .video_service import VideoService
+from .streaming_service import StreamingService
+
+__all__ = [
+    "VideoService",
+    "StreamingService",
+]