[Feat][C++] Support Date and Timestamp data type

[acezen]

Proposed changes

This change add feature that support Date and Timestamp data type in C++ library.

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

Further comments

close #398
close #399

[acezen]

hi, @lixueclaire, can you help review this PR. This feature would not affect other data type and I would like to merge the implementation first and refactor the testing data of ldbc dataset(use the full ldbc dataset as testing), and add unit tests in another pull request.

[lixueclaire]

Thank you for incorporating these two new data types, which significantly enhance GraphAr's versatility. It would be highly beneficial to include some illustrative examples and ensure that the documentation is updated accordingly to reflect these additions.

[acezen]

Thank you for incorporating these two new data types, which significantly enhance GraphAr's versatility. It would be highly beneficial to include some illustrative examples and ensure that the documentation is updated accordingly to reflect these additions.

Thanks, I will open a new issue to include document and unit tests