feat: services table, base segmented control

src/utils/lexorank.ts

@@ -30,6 +30,13 @@ export function getMaxByLexorank<T extends LexorankSortable>(
     );
 }
 
+export function getMaxLexorankByKey<T>(items: T[], key: keyof T): T | null {
+    return items.reduce(
+        (max, item) => (!max || item[key] > max[key] ? item : max),
+        null as T | null
+    );
+}
+
 export function getNewLexorank(
     left?: LexoRank | null,
     right?: LexoRank | null