feat: implement loaders

src/lib/loaders/LoaderYear.ts

@@ -0,0 +1,11 @@
+import { DB } from '$lib/integrations/db';
+
+export const LoaderYear = (year?: number) => {
+	year = year ?? new Date().getFullYear();
+
+	return () => DB.getYear(year);
+};
+
+export const LoaderYears = () => {
+	return () => DB.getYears();
+};