tools: show extension headers in wireshark plugin
tools: show extension headers in wireshark plugin

Add support for Hop-by-Hop and End-to-End extension headers to the wireshark plugin.
Individual TLV options are shown but their content is not parsed (yet).

Additional, small tweaks:
- fix a small typo, use `add_tvb_expert_info` instead of
  `add_tvb_proto_expert_info` (which does not exist).
- reduce range for Path Meta in the dissection tree to the relevant
  fields, not the entire rest of the packet

Closes #4066

GitOrigin-RevId: 3a8ad1b9897d8684e5bbbbdf2c3b0ae28d6cbc5e

netsec-ethz/scion,netsec-ethz/scion,netsec-ethz/scion,netsec-ethz/scion