Initial commit: Complete USB2CAN cross-platform framework

Features:
- Cross-platform support (Windows/Linux/macOS)
- CAN and CANFD protocol support
- USB communication (WinUSB/libusb)
- Device management and configuration
- Message transmission and reception
- Filter configuration
- CMake build system
- Comprehensive examples and tests

.gitignore

@@ -0,0 +1,43 @@
+# Build directories
+build/
+bin/
+
+# Generated files
+*.dll
+*.lib
+*.exe
+*.obj
+*.pdb
+*.ilk
+*.exp
+
+# IDE files
+.vscode/
+.idea/
+*.sln
+*.vcxproj*
+*.user
+*.filters
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# CMake generated files
+CMakeCache.txt
+CMakeFiles/
+cmake_install.cmake
+Makefile
+*.cmake
+
+# Temporary files
+*.tmp
+*.temp
+
+# Log files
+*.log
+
+# Backup files
+*~
+*.bak
+*.backup