Well, you might have guess, but it's a simple chat relay through Steam interface. Nothing more.
Commands:
Open a steam chat with the bot.
1) Enter SERVERLIST to get the ID of the server you want to listen to.
2) Enter LISTEN [ID] to start listening
3) Enter a message in the steam chat to transfert it directly to the server
4) SLISTEN to stop receiving messages from the server.
Installation :
1) Download the smx, put it in the plugins folder
2) Configure the CVAR [IMPORTANT]
A file with all the cvar is created on the first plugin run in cfg/Sourcemod/ folder called "SteamBot_ChatListener.cfg"
3) Here we go, it's done !