libwebsockets

sspc: extend RXPRE_CONNSTATE to handle 8 or 32-bit states

Currently only the low 8 bits of an SS state are proxied in a total packet
length of 8 octets.  Keep that format and behaviour since all the defined
states fit in 8 bits, but also allow for 32-bit states using a packet length
of 11 octets with the same command.

This lets us proxy user states (from http mapping) which start at a user
base of 1000.