Issue 24: Code Quality and Linting Configuration

[adithya1012]

Description:
Setup code quality tools and pre-commit hooks for consistent code style.

Acceptance Criteria:

• Add .pre-commit-config.yaml
• Configure black for code formatting
• Configure isort for import sorting
• Configure flake8 or ruff for linting
• Configure mypy for type checking
• Add pre-commit hooks for all tools
• Document setup in CONTRIBUTING.md
• Add to CI/CD pipeline

Configuration Files:

• pyproject.toml - Tool configurations
• .pre-commit-config.yaml - Pre-commit hooks
• .flake8 or ruff.toml - Linting rules