Created a skeleton of the api

src/lib/data/list-variants.ts

@@ -0,0 +1,10 @@
+export const VARIANT = {
+  standard: "Standard",
+  checklist: "Checklist",
+  project: "Project",
+} as const;
+
+export const VARIANTS = Object.values(VARIANT) as unknown as readonly [
+  string,
+  ...string[],
+];