Added basic plugin support to agent

addon/addon/server.tcl

@@ -79,6 +79,10 @@ proc handle_connection { channelId clientAddress clientPort } {
       }
     }
 
+    foreach plugin [glob -nocomplain "[file dirname [info script]]/plugins/*"] {
+      puts $channelId "[exec $plugin]"
+    }
+
     flush $channelId
 
     close $channelId

addon/update_script

@@ -13,6 +13,8 @@ fi
 # create necessary directories
 mkdir -p ${ADDON_DIR}
 chmod 755 ${ADDON_DIR}
+mkdir -p ${ADDON_DIR}/plugins
+chmod 755 ${ADDON_DIR}/plugins
 mkdir -p ${RCD_DIR}
 chmod 755 ${RCD_DIR}