change scheduling mode to enum in rounds, change appreance of scheduling

mode picker in competition

src/types.ts

@@ -20,3 +20,9 @@ export enum SchedulingMode {
 	round_robin = 'round_robin',
 	double_round_robin = 'double_round_robin'
 }
+
+export function enumToPgEnum<T extends Record<string, any>>(
+	myEnum: T
+): [T[keyof T], ...T[keyof T][]] {
+	return Object.values(myEnum).map((value: any) => `${value}`) as any;
+}