Add format annee

Author: zhouzi

packages/format-number/src/format-annee.ts

@@ -0,0 +1,11 @@
+export const FORMAT_ANNEE_OPTIONS = {
+  style: "unit",
+  unit: "year",
+} satisfies Intl.NumberFormatOptions;
+
+export function formatAnnee(value: number, options?: Intl.NumberFormatOptions) {
+  return value.toLocaleString("fr-FR", {
+    ...FORMAT_ANNEE_OPTIONS,
+    ...options,
+  });
+}