add conf for copyparty

[drizuid]

tested locally; did testing from internal lan using internal dns and external using external dns and cloudflare proxy. shows correct IP assuming copyparty itself is properly configured.

copyparty.conf relevant section below

# not actually YAML but lets pretend:
# -*- mode: yaml -*-
# vim: ft=yaml:

# append some arguments to the commandline;
# accepts anything listed in --help (leading dashes are optional)
# and inline comments are OK if there is 2 spaces before the '#'
[global]
  e2dsa  # enable file indexing and filesystem scanning
  #e2ts   # and enable multimedia indexing
  ansi

  rproxy: 1
  #xff-hdr: cf-connecting-ip
  xff-src: lan
  idp-logout: https://authelia.deez.nuts/logout?rd=https://cp.deez.nuts
  idp-h-usr: Remote-User
  idp-h-grp: Remote-Groups