feat(UI): Account wizard redesign

[Rello]

closing #8822

[kra-mo]

@kra-mo wdyt?

I mean, obvious points of feedback are that the input field should be as big as the "Log in" button and the side/bottom padding for buttons should be equal, plus the buttons on the first screen should all take up as much width as possible, like on the second screen. The "Authorize this device in the browser window that opened." string can also be removed and the icons made the same as on the mockup. The colors of the primary buttons also don't meet contrast requirements, I don’t know where this color is from.

Generally just getting it in-line with the mockup.

[kra-mo]

Plus the "Add Nextcloud account" window title can be made invisible on Mac here. Each screen should give you enough context on its own.

[Rello]

[github-actions]

Artifact containing the AppImage: nextcloud-appimage-pr-10030.zip

Digest: sha256:8548c0b4194b28ec917d29e664bbdbdfb9da9bb37aae075ff515f264924b75a3

To test this change/fix you can download the above artifact file, unzip it, and run it.

Please make sure to quit your existing Nextcloud app and backup your data.

[sonarqubecloud]

Quality Gate failed

Failed conditions
2 Security Hotspots
8.8% Coverage on New Code (required ≥ 80%)
148 New Code Smells (required ≤ 0)

See analysis details on SonarQube Cloud

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