feat: 新增SQLite数据库操作工具集

[hellostone]

Summary

Related Issue(s)

• Closes #123
• Fixes #456

Changes

• Feature A added

contents

• Refactor B

contents

• Fix for C

contents

Screenshots (if UI changes)

Checklist

• been self-reviewed.
  • Code is formatted
  • Tests added/updated
  • All CI checks passed
  • Documentation updated
• added documentation for new or modified features or behaviors.
• added new features, such as new agents, new flows, etc.
• added or updated version, license, or notice information.
• added or updated demo, integration tests, unit tests, or others.
• added or updated ui, or had changes in frontend.

[zhouhaoUCAS]

Hi hellostone,
A big thank you for the time and effort you've put into this PR! Your code contribution has added practical value to the project and means a lot to us.
We have one small suggestions to share with you:
If it's convenient, could you supplement a set of 100% coverage test examples for the features you implemented? This will help other developers more intuitively understand how to integrate the code and its optimal use cases, significantly reducing future collaboration costs.