Friend messages to let you know if/where your friends are on the network - some ideas (combined)

NOTE: I did not use the old/legacy friends system, so no idea if these were past features or would be new. This suggestion would supplement my other suggestion (which seems to have been added, although not taken effect yet - https://discord.com/channels/816561229601964032/816562238013702184/1556769231117357119 1. Leave message. When friends join the network, there is a join message (regardless if they have joined the specific gamemode you are playing), but there is currently no leave message. This could potentially be useful if you want to know if your friends are still online in a different gamemode, or want to know if you can /msg them, etc. 2. Message when friends join and possibly leave servers. If a friend leaves the server you are on, but is still on the network, it may be nice to know what gamemode they joined. For example, "Player has joined RPG-SMP" (maybe also a "leave" message if a player goes to Hub but is still online "Player has left RPG-SMP" although that may or may not get annoying) 3. Message when you join. The "join" message won't tell you if your friends are online when you join the server. It could be nice if when you join the hub, a message pops up listing your friends that are online and what gamemode they are in. For example "Player is currently online in SMP" Basically, allowing you to know where your friends are without having to use the /friend list command. Also, potentially options to toggle these.