[Feature] Support basic python wrapper for miniGU

[qishipengqsp]

[Title] Implementing Python wrapper functions for miniGU session
[Task Score] 2 points (self-assessment based on task grading)
[Background Description] As an embedding database, it is needed to add a wrapper to support Python interfaces for data analysis usage.
[Description of Requirements]

• Design the typical workflow in Python Code
• Wrap the key struct like session struct and query function

[Environmental Requirements] Pass the multi-environment CI in this project
[Output Criteria] Design a workflow in Python code and make it run, a possible workflow like,

import minigu
minigu.load(xxx)
minigu.query(xxxx)
minigu.save(xxxx)

[PR Submission Address] xxx directory in xxx branch of the repository
[Desired Completion Date] 08/15/2025
[Development Guidance] Searching around the python interfaces of DuckDB and Kuzu
[Mentor and e-mail] @qishipengqsp
[Remarks] Write a design document first

[r2cn-bot]

任务创建成功。

[rick-five]

/request-assign

[r2cn-bot]

认领成功：等待导师审核，请及时联系导师进行审核。

[qishipengqsp]

/intern-approve

[r2cn-bot]

认领审核成功：已将该任务分配给学生。