refactor(features): rename GetFonts to FilterAndSortFonts

The feature does not fetch fonts — that lives in \$entities/Font's
fontStore. It owns the user's filter selections, sort preference, and
search-by-name query that drive the listing. The new name describes what
it actually does.

Directory + every \$features/GetFonts import path updated; no symbol
renames in this commit.

src/widgets/FontSearch/ui/FontSearch/FontSearch.svelte

@@ -7,7 +7,7 @@ import {
     FilterControls,
     Filters,
     appliedFilterStore,
-} from '$features/GetFonts';
+} from '$features/FilterAndSortFonts';
 import { springySlideFade } from '$shared/lib';
 import {
     Button,