fix: set correct dist

[gao-sun]

use find technique to include all source files

Testing

uv build now shows

adding 'mcpauth/__init__.py'
adding 'mcpauth/config.py'
adding 'mcpauth/exceptions.py'
adding 'mcpauth/types.py'
adding 'mcpauth/middleware/create_bearer_auth.py'
adding 'mcpauth/utils/__init__.py'
adding 'mcpauth/utils/_create_verify_jwt.py'
adding 'mcpauth/utils/_fetch_server_config.py'
adding 'mcpauth/utils/_validate_server_config.py'

[Copilot]

Pull Request Overview

This PR updates the package distribution settings by switching from the manual setuptools configuration to the find technique, ensuring all relevant source files are included.

• Removed the old "[tool.setuptools]" configuration.
• Added the "[tool.setuptools.packages.find]" configuration with "where" and "include" directives.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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