feat(swiftformat): Add SwiftFormat configuration and improve code formatting

[samzong]

Description

Briefly describe the purpose and changes in this Pull Request.

Change Type

• Bug fix (bug fix)
• New feature (new feature)
• Code improvement (code improvement)
• Documentation update (documentation)
• Build/CI related changes (build/CI)
• Other (please specify in the description)

Related Issues

Please link the issue this PR solves (if any).
For example: Fixes #123

Testing

Please describe the tests you performed and the environments you tested in.

• Tested on Intel Mac
• Tested on Apple Silicon Mac
• Unit tests passed
• UI tests passed

Screenshots

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Checklist

• My code follows the project's code style
• I have performed self-testing
• I have updated the relevant documentation (if applicable)
• My changes do not introduce new warnings or errors
• My changes are compatible with Intel and Apple Silicon architectures

Additional Information

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