Add pattern-based whitelisting feature

**Is your feature request related to a problem? Please describe.**
As of today, we have to register each and every class if we want to allow it for serialization/deserialization if kryo.setRegistrationRequired(true) is set. But this is a bit costlier in terms of code e.g.: lets' say we have 100's of classes we want to register in a package, then we have to register each and every class.

Something like this we want to achieve [https://github.com/x-stream/xstream/blob/20f26bcecc2256e032b1073cef52f14a8ef44d56/xstream/src/java/com/thoughtworks/xstream/XStream.java#L2323](https://github.com/x-stream/xstream/blob/20f26bcecc2256e032b1073cef52f14a8ef44d56/xstream/src/java/com/thoughtworks/xstream/XStream.java#L2323)

**Describe the solution you'd like**
We have to extend DefaultClassResolver and override getRegistartion method. But this method doesn't work if kryo.setRegistrationRequired(true) is set and only we have to be kryo.setRegistrationRequired(false)
and filter each and every class.