Add new generic sorting icons; rename existing sorting icons

Summary:
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. The symbolic link `sort-name` has been changed to point to `view-sort-ascending-name` (from `view-sort-ascending`).
Their fallback colors in the embedded stylesheets have been updated to use Shade Black and Cardboard White, respectively.

Test Plan:
The new icons:

| size | `view-sort` |  `view-sort-descending` |  `view-sort-ascending`
| -----  | -----  | -----   | -----
|`16px`|{F6427148}|{F6428784}|{F6428785}
|`22px` and `24px`|{F6427153}|{F6428786}|{F6428787}
|`32px`|{F6429216}|{F6429219}|{F6429218}

Reviewers: #vdg, #breeze, ndavis

Reviewed By: #vdg, ndavis

Subscribers: cfeck, emateli, ndavis, ngraham, kde-frameworks-devel

Tags: #frameworks

Differential Revision: https://phabricator.kde.org/D16905