add a switch to modify or not the player list

[ShawnFoxter]

The plugin nametags collides with another nametag plugin installed in the backend server, making prefixes and suffixes to not work at all something like format-player-names: true/false as the plugin just breaks the

Also a switch to show only the players on the proxy or show the players in the whole server only-in-proxy-players: true/false I'm saying this 'cause i have different proxies and before the plugin, the players in the backend server was complete but after installing on a test proxy that connects to the backend server too, found out that it was only me who was showing up in the player list knowing everyone else was there