Add variant analysis top header

[koesie10]

This adds the variant analysis top header. It also adds React testing library to make automated testing of this possible and adds stories for the newly added component.

It might be easier to review this commit-by-commit.

Since this is only part of header, we need a better name for this component. However, I couldn't really think of one. The best one I could come up with is VariantAnalysisTitleRow but that doesn't really cover everything.

Checklist

• CHANGELOG.md has been updated to incorporate all user visible changes made by this pull request.
• Issues have been created for any UI or other user-facing changes made by this pull request.
• [Maintainers only] If this pull request makes user-facing changes that require documentation changes, open a corresponding docs pull request in the github/codeql repo and add the ready-for-doc-review label there.

[charisk]

This is looking great! A partial review from me atm.

[charisk]

Is it worth moving this file into a shared location (view/common rather than having some stuff in remote-queries and some in variant-analysis)? I'm happy for this to be in a subsequent PR if we agree it's the right thing to do.

[koesie10]

👍, I think that would be very useful. We can also consider making these importable by just specifying the ../common when we place an index.ts file inside the common directory.

[charisk]

Great! Are you happy to do that as part of the issue you're working on, as a separate PR?

[koesie10]

It might be better to do that in a separate PR. There are some other components which we might also be able to move to the common directory such as VerticalSpace, so the changeset might get quite large (especially since all imports also need to be changed).

[charisk]

Yeah I'd definitely prefer to see it in a separate PR!

[charisk]

Really great work! Thanks @koesie10!