Feature move to gtest

[Certseeds]

Description

不难发现 Ubuntu 26.04 已经可以安装 libgtest-dev, 不再需要捆绑一个 catch2

Fixes # (issue)

Type of change

This commit Works for

• Algorithm
• The template itself

PS:这个是单选

What kind of this pr?

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Documentation update-TODO
• More testcase (for show fix or just add)

How Has This Been Tested?

• This can pass test in my platform
• This can pass test in GitHub Actions

PS: please ensure both of them are ok

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules