include session resumption in fuzzying
Currently the fuzzers in fuzz/
run the protocol when fully negotiating (handshaking). The resumption parts of the protocol are thus not tested. We should enhance the fuzzer to include session resumption.
The approach taken by boringssl on that is to include the resumption data into the fuzzer input, i.e., instead of providing a plan protocol trace, to have a formatted file which contains both the trace and the corresponding data.