feat: organize functions and add type to foods

src/state.ts

@@ -0,0 +1,15 @@
+import { DailyTotalCalories, FoodItem } from "./types";
+
+interface AppState {
+  currentHighlightIndex: number;
+  searchTimeout: number | null;
+  searchResults: FoodItem[];
+  calendarMonthlyCalories: DailyTotalCalories[];
+}
+
+export const appState: AppState = {
+  currentHighlightIndex: -1,
+  searchTimeout: null,
+  searchResults: [],
+  calendarMonthlyCalories: []
+};