Add last_committer_date and last_author_date for file contents API

[lunny]

Fix #32886

Add last_committer_date and last_author_date in the content API which is not implemented by Github API v3 at the moment.

[hiifong]

ci test failed

[wxiaoguang]

GitHub API is like this https://docs.github.com/en/rest/commits/commits?apiVersion=2022-11-28#list-commits

    "commit": {
      "url": "https://api.github.com/repos/octocat/Hello-World/git/commits/6dcb09b5b57875f334f61aebed695e2e4193db5e",
      "author": {
        "name": "Monalisa Octocat",
        "email": "[email protected]",
        "date": "2011-04-14T16:00:49Z"
      },
      "committer": {
        "name": "Monalisa Octocat",
        "email": "[email protected]",
        "date": "2011-04-14T16:00:49Z"
      },

Hmm, that's for commit, not for content .......

[wxiaoguang]

I think this API is not right the request is not clear, "content time" is not the same as "commit time", actually there is no "content time" concept in git. There are 2 times: author time and commit time.

If I understand correctly:

• author time: the content is generated by author
• commit time: the time at which the commit is generated (could done by rebase or amend)

[lunny]

I think this API is not right the request is not clear, "content time" is not the same as "commit time", actually there is no "content time" concept in git. There are 2 times: author time and commit time.

If I understand correctly:

• author time: the content is generated by author
• commit time: the time at which the commit is generated (could done by rebase or amend)

The requirement is Add modified/created time to contents. For a file stored in the git, the lastest commit's author/commit time could be considered the modified time. The different between author time and commit time is commit could be rebase or amend so that commit time >= author time.