Create new mailing list for relay operators that speak french

We are moving the mailing list from https://lists.riseup.net/www/info/tor-relays-fr to torproject mailing lists.

name: tor-relays-fr access: public (everything the same as tor-relays) same moderators as tor-relays plus @Chre

@Chre: anybody else should be a moderator for this mailing list?

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information