thêm zustand để cấu hình global state, hook để lấy platform, thêm polyline và polygon b vào map

hooks/use-platform.ts

@@ -0,0 +1,23 @@
+import { Platform } from "react-native";
+
+export type PlatformType = "ios" | "android" | "web";
+
+export const usePlatform = (): PlatformType => {
+  return Platform.OS as PlatformType;
+};
+
+export const useIsIOS = (): boolean => {
+  return Platform.OS === "ios";
+};
+
+export const useIsAndroid = (): boolean => {
+  return Platform.OS === "android";
+};
+
+export const useIsWeb = (): boolean => {
+  return Platform.OS === "web";
+};
+
+export const getPlatform = (): PlatformType => {
+  return Platform.OS as PlatformType;
+};