Add Ping and Region Restrictions for Hosted Matches

Allow hosts to set optional ping and region restrictions for their peer-to-peer sessions. Hosts could define a maximum allowed latency, prevent players above that limit from joining, or remove them if their connection becomes consistently unstable. They could also restrict matchmaking to selected regions. These settings should remain optional so hosts can prioritise connection quality when needed while still allowing unrestricted sessions for players who want to play with friends in other regions.