Docs feedback - feature proposal: Tag commit author submodel with id and/or web_url
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### Release notes
The current response of the tags endpoint currently returns information about the commit, the tag annotates. However, it only has the authors name and email address. If one wants to use that in a link, these information might not be sufficient. Therefore, we add a submodel to the commit model just like it is done for other endpoint's models as well, having the author's `id`, `username` and `web_url`.
### Problem to solve
The current response of the tags endpoint already returns information about the commit, the tag annotates. However, it only has the authors name and email address. If one wants to use that in a link, these information might not be sufficient.
### Intended users
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### User experience goal
The user should be able to use the API to get the tag commit author's information in a way that they can display a link to the author's profile.
### Proposal
Therefore, I propose to add a submodel to the commit model just like it is done for other endpoint's models as well, having the author's `id`, `username` and `web_url`.
### Notes (from @vyaklushin)
1. We can extend the response with new fields `author` and `committer`. But cannot remove old ones (like `author_name` or `author_email`), because of the backward compatibility reasons.
2. We should verify the impact on the performance of the endpoint, because this change might lead to extra queries to fetch author and committer information.
### Permissions and Security
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### Documentation
Only the response example needs to be updated.
From:
```json
...
"commit":{
"id":"079e90101242458910cccd35eab0e211dfc359c0",
"short_id":"079e9010",
"title":"Update README.md",
"created_at":"2019-01-03T01:55:38.000Z",
"parent_ids":[
"f8d3d94cbd347e924aa7b715845e439d00e80ca4"
],
"message":"Update README.md",
"author_name":"Administrator",
"author_email":"admin@example.com",
"authored_date":"2019-01-03T01:55:38.000Z",
"committer_name":"Administrator",
"committer_email":"admin@example.com",
"committed_date":"2019-01-03T01:55:38.000Z"
}
...
```
to:
```json
...
"commit":{
"id":"079e90101242458910cccd35eab0e211dfc359c0",
"short_id":"079e9010",
"title":"Update README.md",
"created_at":"2019-01-03T01:55:38.000Z",
"parent_ids":[
"f8d3d94cbd347e924aa7b715845e439d00e80ca4"
],
"message":"Update README.md",
"author":{
"id":1,
"name":"Administrator",
"username":"root",
"state":"active",
"avatar_url":"https://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80\u0026d=identicon",
"web_url":"https://gitlab.example.com/root"
},
"authored_date":"2019-01-03T01:55:38.000Z",
"committer":{
"id":1,
"name":"Administrator",
"username":"root",
"state":"active",
"avatar_url":"https://www.gravatar.com/avatar/e64c7d89f26bd1972efa854d13d7dd61?s=80\u0026d=identicon",
"web_url":"https://gitlab.example.com/root"
},
"committed_date":"2019-01-03T01:55:38.000Z"
}
...
```
### Availability & Testing
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### Available Tier
All Tiers
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### Is this a cross-stage feature?
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### What is the competitive advantage or differentiation for this feature?
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