feature: Support gtest

[hustjieke]

Is your feature request related to a problem? Please describe.

To improve code quality, reduce maintenance costs, and reduce the difficulty of refactoring, StoneDB should support gtest.

Describe the solution you'd like

Describe alternatives you've considered

Additional context

Ref: https://github.com/google/googletest how to make & make install: https://github.com/google/googletest/tree/main/googletest#generic-build-instructions

Main Tasks

• #430
• #431
• #432
• #433
• #434
• #435