[App] Add onboarding wizard (#7064)

* [App] Add onboarding wizard

Took 10 minutes

Took 3 minutes

Took 7 minutes

Took 9 minutes

Took 2 minutes

Took 1 minute


Took 7 minutes

* Adjust CI

Took 14 minutes

Took 56 seconds

Took 2 seconds

Took 3 seconds

* Adjust CI again

Took 14 minutes

Took 2 seconds

* Comments and fixes

Took 9 seconds


Took 1 minute

* Rebase.

Took 5 minutes

Took 50 seconds

Took 15 seconds

* Comments.

Took 7 minutes

* CI lol

Took 3 minutes

* CI again lol

Took 4 minutes

* Drop some settings, add some new ones.

Took 19 minutes

* Resize when expanding section

Took 4 minutes

Took 3 minutes

Took 7 minutes

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Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>

.ci/Debian13/Dockerfile

@@ -21,7 +21,9 @@ RUN apt-get update && \
         qt6-image-formats-plugins \
         qt6-l10n-tools \
         qt6-multimedia-dev \
+        qt6-declarative-dev \
         qt6-svg-dev \
+        qt6-shadertools-dev \
         qt6-tools-dev \
         qt6-tools-dev-tools \
         qt6-websockets-dev \