Edit camera speed configuration consists of a slider and a multiplier,
which combine into the total camera speed.
Speed and multiplier are stored per scene.
Fixes: QDS-12187
Change-Id: I587c04cf80d1ca95b5a38c406158e46cdb91d06f
Reviewed-by: Qt CI Patch Build Bot <ci_patchbuild_bot@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>
Reviewed-by: Mahmoud Badri <mahmoud.badri@qt.io>