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Changes several calls of `create_dissector_handle()` to instead call `register_dissector()` with a name for the dissector. This should handle all dissectors in `epan/` from `packet-p*` to `packet-v*`. This change allows affected dissectors to be findable by calls to `find_dissector()`. In turn, this opens up more command-line use for these protocols, including fuzzshark and rawshark, as well as lua use via `Dissector.get()`. Where needed, move the call from the protocol handoff function to the protocol register function, save the result in a static variable, and use that variable in the handoff function. There were some calls to `create_dissector_handle()` or `register_dissector()` which passed `-1` as the protocol argument. When I saw those I corrected them to pass the actual `proto_foo` identifier instead. Partially addresses #5612
