Add a generic sorting options icons as requested in {D12337} as well as version with ascending and descending orders.
FEATURE: 393318
FIXED-IN: 5.53
The existing `view-sort-ascending` and `view-sort-descending` have been renamed `view-sort-ascending-name` and `view-sort-descending-name` as they show alphabetic characters to depict alphabetic sorting.
Their fallback colors in the embedded stylesheets have been updated to use Shade Black and Cardboard White, respectively.