* Support getting a user's password salt via initial websocket connection (added to Event_ServerIdentification)
* Nonsense stuff to figure out later
* move passwordhasher to correct location
* protobuf changes
* add ext to protobuf
* implement request password salt server side
* add supportspasswordhash to server identification
* check backwards compatibility
* reset some changes to master
* implement get password salt client side
* implement checking hashed passwords on server login
* check for registration requirement on getting password salt
* properly check password salt response and show errors
* remove unused property
* add password salt to list of response types
Co-authored-by: ZeldaZach <zahalpern+github@gmail.com>
That marker is only recognized by pb3-compatible compilers, meaning that
tools which are otherwise compatible with our files break on them.
Notably, this includes hprotoc (for haskell).
