feat: add artist radio and track radio (in context menu) (#1437)

* Add API support for artist radio and track radio features

* Add translation strings and settings UI for artist radio count

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Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jeffvli <jeffvictorli@gmail.com>

src/renderer/store/settings.store.ts

@@ -229,6 +229,7 @@ export const GeneralSettingsSchema = z.object({
     artistBackground: z.boolean(),
     artistBackgroundBlur: z.number(),
     artistItems: z.array(SortableItemSchema(ArtistItemSchema)),
+    artistRadioCount: z.number(),
     buttonSize: z.number(),
     disabledContextMenu: z.record(z.string(), z.boolean()),
     externalLinks: z.boolean(),
@@ -723,6 +724,7 @@ const initialState: SettingsState = {
         artistBackground: false,
         artistBackgroundBlur: 3,
         artistItems,
+        artistRadioCount: 20,
         buttonSize: 15,
         disabledContextMenu: {},
         externalLinks: true,