Improve fork form translation with "$options.i18n" pattern
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The following discussion from !55838 should be addressed:
- [ ] @dpisek started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/55838#note_556609590): (+2 comments)
> ```suggestion:-0+0
> :label="__('Project name')"
> ```
>
> I can see that the label was not translatable before but maybe we can change it? :slight_smile:
>
> ps.: I can see that we use the `ForkProject` namespace so should we use it here too?
>
> pps.: I've seen a move towards using `$options.i18n` to store translation strings - if you like the pattern then I guess we could use it here too. But would definitely be something for a follow-up, since it would touch quite a few places within the template :thinking:
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