improve(session): remove import-time logging.basicConfig side effect

[MuhamadRifansyah]

Overview

Avoid import-time logging side effects in zenoh_msgs.session and clean up related diagnostics.

Changes

• Move logging.basicConfig to a guarded call inside open_zenoh_session.
• Add module docstring and tighten logging style.
• Suppress local tooling import noise for zenoh, and clean up minor lint warnings.

Impact

Prevents unexpected global logging reconfiguration on import while preserving runtime behavior.

Testing

all ruff check passed

Additional Information

Line endings normalized in src/zenoh_msgs/session.py to satisfy pylint.