WEBDEV-9446: Move the collection-browser icons into the icons folder

README.md

@@ -351,6 +351,8 @@ Outside lit, use the raw file at `@internetarchive/elements/icons/search.svg`.
 
 The offshoot assets were ported from offshoot commit `a6199f5db22d3908d856033da8bfa8777867d86c`.
 
+The collection-browser icons were ported from `@internetarchive/collection-browser@4.8.0`.
+
 - **Decorative by default.** The root `<svg>` has `aria-hidden="true"` and `focusable="false"`. If an icon is the only content of a control, label the control (`aria-label`), or wrap the icon in an element with `role="img"` and an `aria-label`.
 - **Color and size.** Icons are filled with `currentColor` and sized `1em` by `width`/`height` on the root, so they follow the surrounding text. Set `font-size` or override `width`/`height` in CSS to resize.
 - **Used by.** `ia-item-navigator`, `ia-status-indicator`, `ia-combo-box`, `ia-dropdown-search-bar` and `ia-scrubber-bar` draw their icons from this folder. Recolor one with `color`, since the glyph paints with `currentColor`.

icons/.multicolor

@@ -25,3 +25,8 @@ license-sampling
 license-sampling-plus
 license-share
 license-zero
+
+# Ported from collection-browser: two-tone sort arrows, one arrow lit.
+sort-toggle-up
+sort-toggle-down
+sort-toggle-disabled