Add message carbons to prosody

src/freedombone

 	if [ -d $INSTALL_DIR/prosody-modules/mod_csi ]; then
 		cp $INSTALL_DIR/prosody-modules/mod_csi/*.lua /usr/lib/prosody/modules
 	fi
+
+	# Message Carbons
+	if [ -d $INSTALL_DIR/prosody-modules/mod_carbons ]; then
+		cp $INSTALL_DIR/prosody-modules/mod_carbons/*.lua /usr/lib/prosody/modules
+	fi
 }
 
 function install_xmpp {
 		echo '  "onions"; -- Enable chat via onion service' >> /etc/prosody/conf.avail/xmpp.cfg.lua
 		echo '  "mam"; -- Message archive management' >> /etc/prosody/conf.avail/xmpp.cfg.lua
 		echo '  "csi"; -- Client state indication' >> /etc/prosody/conf.avail/xmpp.cfg.lua
+		echo '  "carbons"; -- Message carbons' >> /etc/prosody/conf.avail/xmpp.cfg.lua
 		echo '}' >> /etc/prosody/conf.avail/xmpp.cfg.lua
 		echo '' >> /etc/prosody/conf.avail/xmpp.cfg.lua
 		echo 'c2s_require_encryption = true' >> /etc/prosody/conf.avail/xmpp.cfg.lua