feat: added square crop thumbnail config

src/types/settings.ts

@@ -62,6 +62,7 @@ export interface DownloadConfiguration {
     output_format: string | null;
     embed_metadata: boolean | null;
     embed_thumbnail: boolean | null;
+    square_crop_thumbnail: boolean | null;
     sponsorblock: string | null;
     custom_command: string | null;
 }