Extract blame page into a ViewComponent
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The following discussion from !110208 should be addressed:
- [ ] @markrian started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/110208#note_1270726754): (+3 comments)
> **thought**: Extracting this partial (and tweaking the markup) is probably a useful change in and of itself, outside of this streaming effort. In fact, this is probably a great use case for a [ViewComponent](https://docs.gitlab.com/ee/development/fe_guide/view_component.html), since it should be faster to render, and it's nicely encapsulated.
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