HarmonyOS 如何获取用户相应权限，如通知权限、位置权限等

获取权限可参考：

Button("系统通知设置页").onClick(() => {
  let context = getContext(this) as common.UIAbilityContext;
  let want: Want = {
    bundleName: 'com.huawei.hmos.settings',
    abilityName: 'com.huawei.hmos.settings.MainAbility',
    uri: "systemui_notification_settings", //消息通知传uri:systemui_notification_settings, 蓝牙传uri:bluetooth_entry, Wi-Fi传uri:wifi_entry,定位权限传uri:location_manager_settings
    parameters: {
      pushParams: {
        bundleName: ""
      } // 应用包名
    }
  };
  console.log("want", want)
  context.startAbility(want)
}).margin(10)