- clean up unused pages
- add keyboard overview
- add search
- reword

Fixes https://gitlab.gnome.org/GNOME/gnome-tour/-/issues/41
Fixes https://gitlab.gnome.org/GNOME/gnome-tour/-/issues/42

tweak super key illustration

tweak super key illustration

"organise" is British English, which has its own separate locale. It's
not a valid spelling for use in user-visible strings.

(cargo-clippy lint tool)

Since we have a headerbar now and the first page is part
of the carousel, we shouldn't use HdyWindowHandle.

fixes #31

- avoid baloon duplicty

fixes #30

- Fullcolor tour
- Basic CSS keyframe animations
- Use of default grey backgrounds due to headerbar

Fixes https://gitlab.gnome.org/GNOME/gnome-tour/-/issues/29

The original implementation to determine the button opacity was clever,
but not easy to understand. The new implementation is more verbose,
but hopefully easier to get.

Anyhow was only used for paginator and
Option makes arguably more sense here than Result

closes #19

you should be able to configure the video path at build
time by passing --video_path=absolute_path
which will be played instead of displaying the LOGO

General polish for the page text.

Fixes #18.

Otherwise it's mixed state until we swipe carousel the first time or
press Next.