feat: Support User-Level Default Activities (#5125)

frontend/lib/api/types/activity.ts

@@ -0,0 +1,18 @@
+export type I18n = ReturnType<typeof useI18n>;
+export type TRoute = string;
+export type TranslationResult = string;
+
+export type ActivityRoute = (groupSlug?: string) => TRoute;
+export type ActivityLabel = (i18n: I18n) => TranslationResult;
+
+export type Activity = {
+  key: ActivityKey;
+  route: ActivityRoute;
+  label: ActivityLabel;
+};
+
+export const enum ActivityKey {
+  RECIPES = "recipes",
+  MEALPLANNER = "mealplanner",
+  SHOPPING_LIST = "shopping_list",
+}