Enhance validation script and CI workflow for code quality checks
- Added support for a --fix option in validate.sh to apply Ruff auto-fixes for formatting and linting.
- Updated GitHub Actions workflow to include separate steps for installing development and runtime dependencies.
- Introduced dedicated steps for code formatting and linting checks using Ruff, along with type checking and security analysis using mypy and Bandit.
Refactor orchestrator activities and configuration files
- Removed unused Temporal timeout environment variables from values.yaml.
- Reorganized import statements in various activity files for better readability.
- Updated logging messages to use consistent formatting across activities.
- Enhanced test cases to ensure proper initialization and shutdown of orchestrator activities.
- Improved overall code structure and readability by applying consistent formatting and style adjustments.
