指定路径解析，如果路径下为数组模型出现无法解析的情况。

需求样例：

datas.items内为数组时无法通过指定路径解析出。

在检查HandyJSON源码时发现是因为在
`deserializeFrom(dict:, designatedPath: )` 函数中并未对该情况进行处理，我对该函数进行了简单的处理，希望可以在后续版本中更新。
```
public static func deserializeFrom(dict: [String: Any]?, designatedPath: String? = nil) -> T? {
var targetDict = dict
var targetArray: [Any]?
if let path = designatedPath {
targetDict = getInnerObject(inside: targetDict, by: path) as? [String: Any]
if targetDict == nil {
targetArray = getInnerObject(inside: dict, by: path) as? [Any]
}
}
if let _dict = targetDict {
return T._transform(dict: _dict) as? T
}
if let _array = targetArray {
return T.transform(from: _array) as? T
}
return nil
}

```

Start with the public deserializeFrom(dict:, designatedPath:) function named in the issue and reproduce the provided case where datas.items contains an array. Check that a designated path resolving to an array can be deserialized successfully, while preserving the existing dictionary behavior.

Written by the indexing model from the issue text.