relay: add more channel modes to the whitelist
relay: add more channel modes to the whitelist

* blockcaps: inspircd +B, elemental-ircd +G
* exemptchanops: inspircd +X
* filter: inspircd +g
* hidequits: nefarious +Q, snircd +u
* history: inspircd +H
* largebanlist: ts6 +L
* noamsg: snircd/nefarious +T

GLolol/PyLink