Add support for newer `jakarta.servlet.http` API into `JsonRpcServer`

[cyb3r4nt]

Newer jakarta.servlet.http API is spreading around and more application servers and frameworks start to support this.
For example, Spring Framework 6 and spring-web started to use that jakarta.* namespace,
and do not provide older javax in transitive dependencies.

Current javax.servlet.http.HttpServletRequest is located at:
https://github.com/briandilley/jsonrpc4j/blob/1.6.0/src/main/java/com/googlecode/jsonrpc4j/JsonRpcServer.java#L107-L157

Newer implementation may look similar and differ only with used request and response types