Icons for windy weather

Summary:
There are now icons to represent windy weather.

BUG: 412718
FIXED-IN: 5.64

Test Plan: {F7609273}

Reviewers: #vdg, ndavis, ngraham

Reviewed By: #vdg, ndavis, ngraham

Subscribers: trickyricky26, GB_2, vkrause, ndavis, kossebau, ngraham, kde-frameworks-devel

Tags: #frameworks

Differential Revision: https://phabricator.kde.org/D24537