Add seek support to TCompactInputProtocol in Rust

Per vchekan:

When Thrift is used in encoding which combine manual and Thrift serialization, such as Apache Parquet then it is required to be able to position within a file manually.
https://github.com/apache/parquet-format#file-format
As TCompactInputProtocol owns value of transport, it is not possible to access it outside of TCompactInputProtocol and perform seek operation.

This patch implements Seek trait for transports which support it.