Refactor logger setup and path handling

Moved sys.path modification from canvas_node.py to __init__.py for better package management. Improved logger formatting for colored output and enhanced file logging configuration with error handling for log directory creation. Added python/__init__.py to make the 'python' directory a package.

python/__init__.py

@@ -0,0 +1,4 @@
+# This file makes the 'python' directory a package.
+from . import logger
+
+__all__ = ['logger']