Add schedule and requests screens with workdays fetching and navigation

package.json

@@ -16,6 +16,7 @@
     "@react-navigation/elements": "^2.3.8",
     "@react-navigation/native": "^7.1.6",
     "axios": "^1.11.0",
+    "date-fns": "^4.1.0",
     "expo": "~53.0.20",
     "expo-blur": "~14.1.5",
     "expo-constants": "~17.1.7",
@@ -43,6 +44,7 @@
   },
   "devDependencies": {
     "@babel/core": "^7.25.2",
+    "@types/date-fns": "^2.6.3",
     "@types/react": "~19.0.10",
     "eslint": "^9.25.0",
     "eslint-config-expo": "~9.2.0",