feat: organize functions and add type to foods

src/auth.ts

@@ -0,0 +1,18 @@
+import { getDivById } from "./DomUtils";
+
+export function showAuthForms() {
+  getDivById('auth-section').classList.remove('hidden');
+  getDivById('user-info').classList.add('hidden');
+  getDivById('app-content').classList.add('hidden');
+}
+
+export function toggleAuthForms() {
+  document.getElementById('login-form')?.classList.toggle('hidden');
+  document.getElementById('register-form')?.classList.toggle('hidden');
+  
+  const logForm = document.getElementById('loginForm') as HTMLFormElement;
+  logForm.reset();
+
+  const resetForm = document.getElementById('registerForm') as HTMLFormElement;
+  resetForm.reset();
+}