* feat(icons): add layout-horizontal and layout-vertical
Adds two icons for layout direction: two blocks above a left-to-right
rail, and two blocks beside a top-to-bottom rail. These match the frame
layout direction modes found in design tools and CSS flex-direction
(row / column).
This fills a gap identified when the flexbox icon request (#399) was
closed: "Only missing icons are: flex-direction and flex-wrap icons,
plus baseline." The align-* and stretch-* family covers alignment,
justification and distribution, but nothing currently depicts direction
itself.
Design notes:
- Reuses the 7x7 rx=1 block already shared by layout-grid, layout-list
and layout-panel-*, rather than introducing a new base shape.
- The two icons are exact mirrors, with rails on the integer grid
(y=18 / x=18) so the 2px stroke stays sharp at low DPI.
- The 3x3 chevron is the one used by decimals-arrow-right, which shares
the same composition: elements above, directional rail below.
* Rename icons
* Apply batched suggestions from code review
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
* Update usecases
---------
Co-authored-by: Eric Fennis <eric.fennis@gmail.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
